The tablet does not charge from USB through a computer or laptop. Why and what to do? The iPhone does not charge in the car from usb - the solution to the problem Why the phone does not charge through the computer

If the charging circuit of your device is working properly (it is normally charged from another charger), but it does not charge from the charging you need (for example, through a cigarette lighter), you can do the following:
Replace / repair / remake the cable from the charger to the charged device (it makes no sense to save on the quality of the wire, often a shorter and thicker cable charges faster)
Replace / repair / modify the charger (a more powerful charger in terms of current may charge faster, instead of a charger you can use an external battery, some have more powerful outputs - about 2 Amperes, it can help if the device is completely discharged)

More details
Often the problem is just a USB cable with a lot of resistance (for example, the wires are thin and long). Sometimes the cable can be partially broken (one core remains intact or the broken wires are attracted to each other only by the insulation) at this point the resistance increases sharply.
When you try to charge with a large current, the voltage drops significantly at a large resistance and becomes insufficient for the device being charged. For data transmission and charging low-current devices, such wires may be suitable, but for charging devices that require high current, they are not. If it is not possible to replace the wire, you can significantly shorten it or cut off the connectors from it and solder them to a wire of a larger cross-section, as it will probably no longer work as an information cable.
If the device being charged is turned off (put into sleep mode), then charging will go faster, or even be possible.
Most often, a power supply unit with a USB connector at the output is used as a memory device, in which there are 4 contacts: two are 5 Volts DC and two informational Data + and Data -. A chargeable device, for correct charging (the task is not to overload the charger, to ensure the fastest possible charge, not to use an unidentified or weak charge) tries to calculate the characteristics of the charger through the state of the Data + and Data - signals.
Accordingly, some manufacturers can install jumpers, resistors, and more difficult decisions between the contacts of the USB charger connector, with the help of which the device will recognize the charger as original and charge. Without "seeing" the necessary states of information signals, the device will not start charging.
The Micro-USB connector has 5 pins, an additional pin is most often used to recognize the fact that a cable is connected (for example, USB OTG cable- there is a jumper between pin 4 (ID) and pin 5) and switching to the master device (host) mode, in some models it can affect the current consumed when the device is charging.
If the rated power, voltage of the charger and other quality characteristics are suitable for charging your device, then the charger can be modified by finding the appropriate circuit.
You cannot deceive the charging circuit (or use a low-current charger in the case when the charged high-current device does not have a charger power recognition circuit), you cannot use a poor-quality cable, since there will probably be no charge anyway or it will be long, either the charger or the charging circuit in charged device.

The maximum current consumed by the USB bus power lines must not exceed:
USB 2.0 - 500 mA;
USB 3.0 - 900 mA;
USB 3.1 up to 5A.
USB 2.0 is still the most common - by default, the device is guaranteed a current consumption of up to 100 mA, and after coordination with the host controller - up to 500 mA.
Power supplies with a USB output can usually deliver significantly more current than a USB port.
Often, to increase the current drawn from the USB ports of a computer, a Y-type cable can be used, which allows you to get power from two ports at once.

Ai Charger, APP Charger programs, which help to charge devices faster, due to receiving a current of more than 500 mA from the USB port (it is likely that it will not work on any motherboard).

Quick Charge 2.0 is Qualcomm's technology using a more powerful Charger and the use of more voltage (Quick Charge 1.0 simply meant a more powerful charger - 5 Volts / 2 Amperes)
Output voltage / current: 5V / 2A, 9V / 2A, 12V / 1.67A and 20V
Power - about 18W
Quick Charge 3.0 - Qualcomm technology, relatively 2.0, charge algorithms are mainly optimized, the speed has not increased significantly relative to 2.0. Quick Charge 3.0 asks the device for the required voltage, which can be anything in the range from 3.2V to 20V in 200 millivolt steps. This provides a wider selection of available voltage ratings.

Standards:
Battery Charging v1.2 Spec and Adopters Agreement (BC1.2)
IEC 62680-2: 2013 Part 2: Universal serial bus - Micro-USB cables and connectors specification, revision 1.01
IEC 62680-3: 2013 Part 3: USB Battery Charging Specification, revision 1.2

Today's phones have improved a lot, but users have to pay for new features in a short time. autonomous work... If you constantly use your smartphone for entertainment, surfing the Internet or making phone calls, the battery usually discharges in half a day (5-7 hours).

A message appears on the screen asking you to connect the device to the electrical network, and here a problem arises - often there are no free outlets nearby. You can always recharge your phone from a computer or laptop - just use the USB port. We will look at the advantages and disadvantages of this method.

Arguments for charging from a computer:

1. The ability to stay connected. Sometimes you need a few percent of the charge to make an important call or send a message. It is enough to connect the smartphone to the nearest computer and recharge the battery of the device.
2. Convenience. If there is a computer nearby with several free USB ports, you do not need to look for an empty outlet or install an electrical splitter.

Arguments against charging from a computer:

1. Virus Infection Threat. If you connect your smartphone to someone else's computer, you can accidentally get a dangerous file - a virus. To insure against the problem, before connecting, open the phone settings section and select the "Charge only" mode. This function blocks the transmission of information.
2. Slow charging. The USB connectors of the computer are not able to provide the required level of current for charging mobile phone therefore the battery charges slowly. Sometimes you need to wait a few hours for the smartphone to reach at least 50 percent of the charge.
3. Battery worn out. Some users have noticed that with frequent recharging from a computer, the smartphone's battery starts to drain faster. That is why phone manufacturers recommend using original chargers to fill the battery with energy.

Difference between charging from USB 2.0 and 3.0 connectors

Majority modern computers possess modern ports USB 3.0. This connector allows you to quickly charge your phones thanks to the increased current strength of 900 mA. The outdated analogue (USB 2.0) had an indicator of 500 mA, which is why smartphones were charged from computers very slowly. If it is important to quickly get a few percent of the charge, connect your phone to a modern USB port (3.0). As a rule, such a USB port is blue inside.

What if, the USB port stops working after charging

Sometimes the phone creates a heavy load on the USB port, and it stops working, as if it freezes. In such cases, the message "The USB device is not working properly and has exceeded the power limits for its hub port" may also appear. Then it is better to disconnect the phone from the computer and it is better not to charge from it. In the window with a message about the problem, click the "Reset" button, if any.

But even after stopping charging, the USB port may still not work. In this case, you can:

But if this does not help, then unplug the computer completely from the power supply. If this is a laptop, then it is better to also remove the battery for 10 seconds and put it back. Now turn it on and check.

Conclusion

In total, in 99% of cases, you can recharge your smartphone from a PC or laptop without any fear, especially if you need to make an important call. I recommend using this feature when needed, rather than all the time. Otherwise, the risks, albeit unlikely, are possible - infection of the device with viruses and the rapid depletion of battery resources.

If you are faced with a situation where iPhone has stopped charging, do not panic. This does not mean that your device is broken and you need to go for a new one. The reason may not be serious. And in this case, you can easily cope with the problem yourself. You do not have to go to the master and lay out a large sum for repairs.

Sometimes it happens that the iPhone does not charge from the computer. But it so happens that it is impossible to charge the iPhone from the network. Today we will talk in detail about the first situation.

What manifestations can this problem have? When a gadget is connected to a PC, the battery indicator usually pops up and a characteristic sound is heard, indicating the connection. If the charge does not go, nothing of the kind is observed.

Note that owners of devices of the fourth line encounter similar troubles more often than others. The simplest solution to this problem is to restart your smartphone. But it helps if there were problems. system property... In other cases, the approaches will be completely different. Read about all this in detail below.

Anyone can have charging problems. iPhone models... No user is immune from this. The following are the most common sources of this kind of trouble:

1 The device was connected to an old PC or laptop. If USB charging isn't working, it might be the port. It is common for some PC models to turn off these elements to conserve energy. Many users do not know about this. So try to either make ports enable or find an outlet and use it. 2 The cord is damaged or defective. Often, charging does not work, because the user bought a Chinese fake. For goods from the Middle Kingdom, this is a common practice. In this case, you will have to fork out for the original cord. The same can be recommended in case of damage to the "native" accessory. In general, iPhone cables are fragile and should be handled with care. 3 The lower loop is faulty. Sometimes the "apple" device announces to its owner that the accessory is not supported by it. The problem, of course, is more serious than the previous ones. But here, too, panic is not worth it. Better go to the repair shop as soon as possible and have the loop replaced. In terms of time, this operation does not last long. 4 The device is damaged. IPhones often stop charging after being dropped and hit. Here, too, do not hesitate for a long time and find out the reasons yourself. And even more so - to delve into the "filling". Just run to the service. Perhaps the specialists will be able to restore your device.

What to do if iPhone won't charge

If your gadget stops receiving power from the original cell, do the following:

1 Restart the system. This method seems so simple that users do not even remember about it when they encounter difficulties. This simple action can solve more than one problem with the iPhone. 2 Carefully inspect the cord, charger, port, outlet. Let's say checking the charging unit is very simple. The cord is disconnected from it and an attempt is made to work with USB. If all is well, the source of the problem is hidden in the unit, because the cord is definitely working. 3 Clean the charger connector. Any more or less experienced owner of a smartphone from Apple probably knows how to do this. 4 Apply the recovery mode - Recovery Mode. In terms of efficiency, it is close to a regular reboot, but it better fixes technical problems. including those arising from charging. But do not forget that after recovery in emergency mode, the device settings will return to their original settings. Therefore, take care of the backup in advance. 5 Go to the repair shop if none of the above methods are successful. This means that your device needs a thorough examination and serious intervention. You will probably need to open the case and carefully study its contents. Most likely. repairs will not come cheap. But your gadget will be saved. In terms of time, replacing the battery or the connector for the charging cell will not take more than 30 minutes.

The introduction of the apparatus into the named mode is carried out as follows:

• The user turns on the iPhone.
• Clamps the Home element.
• Connects the device to a PC or laptop using a USB cable.

That the gadget is in desired mode, will be indicated by the corresponding picture on the display. Getting out of it is even easier - you just need to click on "Power".

IPhone Battery Charging Guidelines

And in order for the battery of your device to serve as long as possible, do not neglect the following rules:

1 Do not use or charge your device in extreme temperatures. The developers consider the most acceptable range of 16-22 degrees (but not more than 35). Overheating of the case is very dangerous and leads to an irreversible decrease in battery capacity. 2 Use only "native" charger to work with the gadget. Or take at least a certified cord. If you do not ignore this recommendation, you will never run into problems. Which are discussed in this article. 3 Do not allow the iPhone to completely discharge. Means up to 0%. The life span of a lithium-ion cell is expressed in number of cycles complete discharge... The last term refers to the situation when the device has used up the entire battery capacity. High-quality batteries can withstand up to 600 cycles. And according to the manufacturer, the life of iPhones is 500 cycles, and of other "apple" gadgets - up to 1000. Each time the device is connected to an outlet or to a PC, the battery life decreases. And the “fault” for this is precisely the depth of the discharge. It turns out that the stronger the lithium-ion cell is discharged, the faster it will die. Accordingly, to increase its resource, do not allow complete discharge.

but personal experience many users are told that, of course, no one can follow exactly these rules. You won't go everywhere with a thermometer and take it out with your iPhone. It is enough just to avoid the hot rays of the sun hitting the device, do not leave it in the car and do not charge it with something crushed.

In addition, it is known that when the charge voltage of a lithium-ion cell is increased by only 3-5%, it will lose capacity 100% faster with each cycle. To prevent this, the manufacturer has built special-purpose controllers into the original unit and into the device itself, which monitor the process conditions. Of course, there is no such technology in Chinese forgeries.

Conclusion

No matter how high-quality and powerful a mobile product is, sometimes any system fails. Various malfunctions or breakdowns occur. Therefore, the owners of high-tech devices should always be ready to contact the service.

In order not to waste time and money in case of problems with iPhone charging from a PC, try to fix the situation yourself first. And if all else fails, do not forget that there is a 2-year warranty. Perhaps your problem will be fixed for free.

The battery is the weak point of any laptop. The older it gets, the faster the battery runs out. Therefore, the question of recharging it is becoming more and more acute, and the charger is not always at hand. Is it possible to charge a laptop via a USB port from another computer or from an external PowerBank battery? Let's try to understand this issue.

If I had been asked such a question a few years ago, I would have answered with confidence that no, you cannot! Indeed, before the USB port on a laptop was used exclusively for connection peripheral devices... Yes, it was possible to recharge a phone or tablet from him, but he had no reverse action. A special power supply was used to charge the battery. Moreover, often each manufacturer had it with its own, individual connector, which was terribly inconvenient. Especially on the way.

But time passes and everything changes. The latest notebooks, netbooks and ultrabooks use the new USB 3.1 port for power connections. This is the so-called Type C connector. This is how it looks:

So, thanks to technical progress, you can finally use the YUSB ports to charge your laptop.

What are the differences between ports

The fact is that the USB standard itself has been developed quite a long time ago, back in 1994. And then the question of supplying pure power through this bus did not arise at all. In the future, over more than 20 years, quite a few types of YUSB connectors have been invented:

But all of them were united by the fact that they could not provide power transmission of more than 4.5 watts. If for a smartphone or tablet this was at least enough, then for a laptop you need at least 30, and better 50 and above. Accordingly, charging a laptop via USB was out of the question until a more power-hungry version appeared. And it was Type C. In size, it is almost two times smaller than the usual 2.0 / 3.0 port:

But it may well provide the transmission of current with a power of up to 100 watts in both directions - that is, both to the connected devices and from them to the host. This is quite enough not only for ordinary models, but even for gaming laptops. You can take one or two powerful power banks with you on the road and not worry about not having an outlet at hand!

But what about the owners of old models?

Unfortunately, they will not be able to charge the laptop via the USB port under any circumstances. They just don't know how. How to be in this case? Just buy an extra battery and carry it with you. Well, or, alternatively, save money to buy a new one mobile computer... You may argue - you can't save enough money for this! But if your work depends on it, then maybe it makes sense to invest? You decide! Good luck!

Ragged or frayed the wire is one of the most common reasons for the lack of charging when connecting the phone to a charger or computer.

How avoid damage wires:

What to do if the cable is already damaged or cut off:

• The easiest and most expensive way to fix a breakdown is buying a new wires.

The connector in the phone is damaged

An equally common problem is connector breakage on cell phones. It is not very easy to detect such a breakdown, but it is possible. One of the characteristic signs of a malfunctioning connector is turning on charging only in certain positions of the cable plug.

How to fix the problem:

• The first step is to try clean charging connector. The accumulated dirt often becomes the cause of many breakdowns;

Bad battery

Battery problems can also make it impossible to properly charge your mobile phone, smartphone, tablet, or other device. It could be battery swelling, burnout contacts or simply a loss containers due to aging.

There is only one way to fix this problem - the acquisition and setting a new battery. It is necessary to buy a battery exclusively for your phone model, while it is recommended to choose exactly original products, because cheap Chinese counterparts can be very inferior in quality and capacity.

Software problems

Errors in software often occurs in smartphones; on ordinary mobile phones, malfunctions of this kind very rarely occur. Software breakdowns include firmware malfunctions device, drivers and also installation harmful applications that interfere with the correct charging of the device.

Ordinary users can try to correct bugs in software in two ways: dumping settings on your smartphone or flashing device.

How reset settings:

In case of inoperability of the smartphone due to no charge or absence reactions resetting the settings will require a full flashing device. The firmware process depends on specific model mobile phone, on some it is enough to download special software and connect the smartphone to a PC. On others, it will be required in advance unblock bootloader or enter the device into the firmware menu. Inexperienced users should not do this on their own, it is better to turn to professionals.

Battery not calibrated

This issue can occur during installation new battery into the phone. It can manifest itself in the following ways: lack of reaction to the connection of the charger, the phone is not fully charged or fast discharge. To calibrate the battery, you need to conduct a pair full cycles charging and discharging your phone.

Many users, when trying to connect a phone to a computer using a USB cable, are faced with the fact that the computer does not recognize the connected gadget. The connected device is charging, while there is no access to the smartphone itself and its internal content. I also encountered this synchronization problem, and in this article I will tell you why the computer does not see the phone via USB, and I will also share various methods for solving this issue.

The whole complex of reasons for the problem that the PC does not see the smartphone through the USB cable, I would divide it into hardware and software, and below I will list each of them, while providing instructions on how to fix it. But before using the methods I have indicated, try restarting your computer and smartphone - this does not help as rarely as it seems. This problem mainly occurs with devices Samsung, Lenovo, HTC, LG and Fly.

So why does the computer not see the phone via USB, but is charging - hardware reasons

1. Damaged cableUSB. It often happens that the cause of this dysfunction is damage to the USB cable itself. Cables from little-known or "non-name" manufacturers do not have a large margin of safety, and can fail literally in a couple of months from the start of operation, and as a result, the computer will not detect the connected phone.

In addition, even the most reliable cables from global brands are susceptible to stochastic damage - they can be accidentally damaged during use, can be chewed by pets or spoiled by children. Therefore, first of all, inspect your USB cable for the possibility of mechanical damage, and, if the external cable is intact, try using it to connect your device to another computer. If the device is not recognized on another PC, try replacing the cord.

2. Damaged portUSBon the computer. USB ports used in a computer are also susceptible to various mechanical damage, including damage to the USB controller, and south bridge motherboard... Try to insert the cable into another USB port, but if this does not help to fix the connection of the phone to the PC, follow the further tips.

3. Damaged cable jack on the phone. Has water entered the socket of the smartphone or is it damaged? If so, then it needs to be replaced.

4. Try removing the battery. According to the reviews of some users who also had a problem with the fact that the computer did not see the phone through the US-BI, removing the battery from the smartphone helped.

Turn off the battery, pull the battery out of it for a few seconds, then put it back, and turn your device back on.

If nothing helps you to fix this problem, then describe your situation. What has already been done by you and what is happening to your Android device at USB connection gadget to PC in the comments, I will try to help not only me, but everyone who has encountered this problem.

The computer does not see the phone via USB - software reasons

After describing the hardware reasons, we will list the main software reasons if your computer still does not recognize cellular telephone connected with USB cable, follow the further instructions.

1. We work with the settings.We go into the settings of our device, select "Memory" there, click on the three dots at the top (Properties), select "USB connection to a computer" and put a checkmark in front of "Media device" (" USB stick"). If you have a checkmark next to using USB as a modem, uncheck it.

The PC must be enabled windows service Update (to download drivers for your phone) and new device detection service. Remember to unlock your phone when connected to your computer, this is important.

If you are a conservative and have Windows XP, download the MTP (Media Transfer Protocol) for XP from the Microsoft website and install it on your computer.

2. If you have lost driversUSB- ports, the computer may not see the phone.If the drivers for the USB ports are dysfunctional, the latter simply stop working. To fix this problem, install USB drivers from the "native" driver disk to your PC's motherboard, or download the latest drivers from the motherboard manufacturer's website.

Also, due to some reason, power may be turned off for a number of ports.

3. The device drivers have flown. Go to "Device Manager" and see if there is a question mark or exclamation mark under "Portable Devices".

Check if your device is there and make sure it is working properly by right clicking on it and clicking Properties. If it is not there, or you have doubts, uninstall the driver, disconnect the phone from the computer, and then turn it back on, and let the system install the driver again. This can help solve the problem with the fact that the smartphone does not connect via USB to the computer.

Also, it will not be superfluous to enter the website of the manufacturer of your smartphone and download the latest drivers for it to your PC (for example, there is a special software for Samsung Samsung kies).

4. Installing the updateKB3010081 (KB3099229). Windows 10 owners may need to install update KB3010081, which is responsible for working with Windows Media Player... This player is directly related to the normal operation of the MTP (Media Transfer Protocol) service, so download and install these updates.

Also common cause there may be an unreliable build of the OS itself on a PC. Only the rearrangement of Windows to a more working version will help here.

5. Custom firmware is inoperative. The desire of many fans to play with the firmware for their Android device can do them a disservice in the form of the device's failure to work normally with the computer. Try restoring the standard firmware or recovering from a backup (if available).

There are no drivers for the phone on the computer

Although, usually, a computer with the latest OS detects and sees a smartphone via USB without problems, the opposite cases can also be observed. Try to search the network for a driver for your smartphone, sometimes a driver for similar models of this brand may come up.

The phone may not be recognized by the computer due to viruses

Trite, but all kinds virus programs can block work with external mobile devices. Try to check your computer with Dr. Web CureIt!, in some cases it can help.

If the problem of detecting a mobile device by the computer is not resolved, reset the settings

If, until now, your computer does not see the phone via USB, resetting the smartphone settings using Hard Reset... Go to the settings of your phone, select the menu item " Backup", And in it select" Reset data ".

But I warn you right away that you will lose your files and settings located in internal memory phone (the files on the SD card will remain intact), so this item should only be used as a last resort!

Conclusion

As you can see, problems with the lack of visibility of the connected phone on the PC can be of both software and hardware nature, and there are a considerable number of such problematic factors. I would advise you to first pay attention to the probable mechanical damage in the cable and device, and only then switch to software methods.

In many cases, a simple restart of the smartphone (temporary removal of the battery), as well as working with the phone's USB connection settings, can help. If all of the above does not help and the computer does not see the phone via USB, but is charging, then you may need to contact a qualified service center.

P.S. For lovers of visual demonstrations, I present a video on the question:

Sometimes you need to connect Android to your computer under Windows control to transfer specific files. Sometimes problems arise, and the computer does not see the phone via USB, it charges, but does not provide the ability to move files.

We suggest that you consider the possible options in general, and then discuss all the solutions to the problems.

Reasons why the computer does not see the phone via USB

This could be to blame software incompatibility or technical difficulites... From time to time, the cable is damaged, contacts in the smartphone break. In the first case, you need to try another cord, and in the second, contact the service center to replace the connector. A broken port on the computer can also be causing the problem, so switch the wire to a different socket to fix the problem. These are the most common hardware failures.

It is more difficult with software errors, since there are a lot of reasons for failures. These may be missing or outdated drivers, incorrect connection modes (when the computer charges the smart, but blocks the transposition of documentation into folders) and other incompatibilities, which we will discuss in detail below.

What if the computer cannot see the phone?

Listed below are all the methods that can help you solve the cable connection problem.

Check your USB connection settings

The method will help if charging is in progress during pairing, but the information cannot be reset. To transfer documents, you need to connect Android as a media device (MTP). To do this, follow these steps.

Attention!In some cases, you may have to connect your phone to your computer and switch between different options several times before the desktop recognizes your device as multimedia.

If you have older versions of Android, try this.

Connect the device to your computer, it should be recognized.

Install USB MTP driver

It happens that the smartphone is not displayed due to driver problems, so try updating it.

Once the driver is installed, the PC should recognize Android phone... You may need to restart your computer for the update to take effect.

Download and Install Media Feature Pack for Windows 10

We already mentioned that you need to use the MTP protocol to transfer content. It is bundled with Windows Media Player, and some versions of Windows 10 lack Windows Media Player and support for related technologies. If your Windows version 10 does not recognize Android, download and install Media Feature Pack from Microsoft official site.

Use the supplied USB cable

Uninstall Android Drivers

Sometimes the system does not latest drivers or they are not installed correctly. We recommend that you remove them and reinstall them.

It remains to check if the method worked.

Activate USB Debugging

From time to time, a connected gadget is recognized when USB debugging is active. If you are using Android 4.2 or newer, this feature may be hidden. To enable it, follow the steps below.

1. Go to Settings - About Phone.
2. 7 times click on "Build number".
3. Go back.
4. Open "Settings - For Developers".
5. There, scroll down and activate "USB Debugging".

Sometimes it is already on, in which case it should be turned off.

Turn on airplane mode

If Windows has stopped seeing the phone, start Airplane mode through the panel quick settings in the blind or by going to the "Settings - More" path. Often the machine is then recognized by the PC. This is an easy way, so feel free to try it out.

Reboot your phone in Recovery or Fastboot mode

Read about how to enter it in our other article, where we described the process for each manufacturer. After you get to Fastboot mode or recovery, connect the smartphone to the PC, wait until the necessary components are installed. After that, a conductor should open in front of you with a proposal on what to do with the connected device. When done, restart your Android.

Install KIES from Samsung

If your Samsung gadget is not recognized by Windows, download software KIES from the manufacturer's official website and install it on your computer. With it, you can definitely connect your smartphone.

Use USB 2.0 ports

Try switching the cable from USB 3.0 to USB 2.0. Users reported that it worked sometimes for them.

Reinstall ADB

Windows occasionally does not recognize the smartphone due to problems with Android interface Composite ADB, so you should reinstall it.

This solution works with Android 5.0 and newer OS, but it may also be compatible with older ones. Android versions... Users have reported that it is not always worth downloading the YUSB driver from Google, and often the problem is solved simply by following the first four steps.

Reboot your Android device

At times, this simple solution is the most effective. People have repeatedly reported that after restarting the phone, the computer recognized the mobile phone without any problems.

Connect your phone directly to your computer

Some USB devices may not be recognized if you connect them to a USB hub or extension cable. So if you are using a USB hub, disconnect it and connect your Android directly to your PC to fix the problem.

Clear cache and data for external system storage and storage systems

This solution works on Android 6 and up. But if you have an older system, try this anyway.

After deleting the cache and data, restart the gadget and reconnect it to your computer.

Sync Android to PC using a third-party app

This does not guarantee 100% performance, but it often helps. Just install the sync app from Play Market which will help the computer recognize. Try, for example, Mobile Go for connecting and transferring data from Android and iOS to PC.

There are many reasons why a computer cannot see an Android phone. We hope these solutions are helpful to you and solve your problems.

V modern world a smartphone is an irreplaceable thing, so when a favorite gadget takes a long time to charge or does not turn on at all, it becomes a whole problem, especially if it is a new phone.

First of all, we think about how to charge our gadget, especially when we are in a hurry and we are looking for the causes of problems in the phone, but before that we should take a good look at the related equipment:

• Socket - if the wiring is old or there are some other problems with electricity, then this may well explain why the gadget is charging or not;
• Charger - check its integrity, it may be damaged;
• Incompatibility of the charger with the gadget - if the inputs are similar, this does not mean that the charger is suitable for both models of smartphones.

If you are convinced that you do not have any of the above problems, you can proceed to examining the phone itself. We'll take a look at the most common reasons a phone won't take a charge.

The gadget is charged only from the computer

When the phone is charging only from the computer, but the smartphone is turned on and working normally, it is worth checking the charger. But if the charging is in order, and the smartphone does not see it or says that charging is in progress, but in fact it is not so, there is a malfunction in the phone.

In some cases, flashing the gadget or replacing the input helps, but only a professional can do this after examining the device and fixing the problem.

What to do if the phone does not charge, but the charger is connected

It happens that the phone shows charging, but does not charge, and even after several hours of recharging, the battery remains at zero. Or, if you do not charge the phone for a long time, the battery will not take charge. In both cases, there may be several reasons:

• Charging does not charge;
• The phone battery is defective;
• Many applications and other services are open.

If the matter is in the charger, the gadget detects the charger, but due to technical malfunctions it does not gain charge. This situation is probably known to iphone owners, since frequent use of the cable malfunctions. Try to replace the wire, maybe that's the point.

In the event that the problem lies in the battery, you will have to buy a new one or even contact the master, see in such smartphone models as Samsung Galaxy S6, LG Optimus Vu, Htc one The X battery is built-in, which means that you cannot replace it yourself.

The latter option is very rare, but it still takes place, especially if you are the owner of a DNS or Fly brand smartphone. In this case, you just need to close all programs, in particular Wi-Fi, the Internet and your favorite games, well, then leave your android alone while it is recharging. If the indicator shows that the charge is coming, you can congratulate yourself, you just fixed the problem.

Poor contact contact

You are familiar with the situation when the phone is working and charging is in order, but for some reason the smartphone does not respond to the device when connected to the network. You don't even know what to do, since the phone does not charge for a very long time, but the reason for this may be commonplace.

From time to time, dust gets into a cell with a removable battery, especially for older Samsung models. If you do not clean the inner surface, dirt accumulates, creating a layer that prevents the normal docking of contacts, which is why the phone does not charge. Try to remove the battery, then clean it and the inside of the case with a cotton swab. Also pay attention to the "teeth", if they are slightly curved, fix it using a match, but proceed carefully so as not to damage the contacts.

The phone does not charge from the charger

When the phone does not charge from charging, the reason should be looked for in the charger or in the gadget connector. In this case, it is very easy to find out what really does not work, it is enough to connect a mobile phone to a PC or use a universal “frog” charger, but it will be problematic to use it every day, since you will have to turn off the phone and take out the battery every time. Another way to charge your phone from an external battery, but this is also not an everyday option.

The smartphone is charging in the opposite direction

Not everyone knows why charging goes into reverse side, and at the same time the phone does not take charge, but, as it were, gives it away. Faced with such a situation, many are simply perplexed. The reason for this unusual phenomenon is simple - a failure in battery calibration, this happens from time to time with Lenovo phones, but don't panic, because the problem can be solved very quickly.

To eliminate the anomaly, first you need to discharge the battery to such an extent that the smartphone turns off itself. After that, take out the battery for a couple of minutes and put it back into the phone. Connect the gadget to the charger, but do not turn it on until the charge is on.

The phone takes a very long time to charge

If your smartphone has been on charge all night, but is not fully charged or the indicators are not more than 1 percent, then the problem lies in the battery. Of course, for the first time you can charge the phone even up to 100 percent, but not only will the process take a lot of time, but also the gadget will be discharged in just a couple of hours, if not earlier.

In this case, you have only one way out - to buy a new battery and then calmly use your irreplaceable gadget.

You can find out the problem yourself, but if you did not manage to find out why the phone is not charging and you have tried almost all of the above methods, it is best to refer the smartphone to the master, because only a specialist can establish the true cause of the malfunction.

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