Changing the SIM card connector on the motherboard. Instructions for the correct installation of a Sim card in any phone. Will a regular SIM card fit into the micro-sim slot

In this article, we will tell you how to correctly insert a SIM card into your phone yourself. New modern models are coming out with convenient slots into which cards of the required size can be inserted without problems.

Yes, and all popular mobile operators produce original constructors - SIM cards of three demanded sizes: nano, micro and standard.

A SIM card is an identification module for a subscriber of a telecom operator. Several decades have passed since their launch and before the start of mass sales, and during this time their shape and size have improved. This process was forced. First, smartphones appeared on the mobile markets, and there was simply not enough space under the back cover for parts. Technologies have improved, user requests have increased, batteries are more and more, phones are thinner, and space is less.

This evolution of cards allowed them to be reduced by almost half, and modern retractable slots significantly freed up space for other details.

Let's look at what types of sim are, what is their feature, and how to insert a sim:

• Full-size (the presence of which many did not even know) is the largest in the line, along the perimeter as bank card... Appeared in 1991 with the first wave of popularity cellular communication among ordinary residents. V modern telephones not used, sometimes you can find cars with similar "innovations" a la 90s.
• Mini-SIM - is still used for devices released from the 2000s to the early 2010s, supports 2G and 3G.
• Micro-SIM - appeared in 2003, but on this moment is considered the most used generation of communication modules. Supported by all manufacturers modern gadgets with 3G and LTE.
• The smallest is the Nano-SIM, which looks like its predecessor, only without the plastic edges. It appeared five years ago, and is used in all models of the Apple brand and some other premium manufacturers.

All types of SIM cards are inserted in the same way - into the designated slots in a smartphone or tablet. It is impossible to say exactly where the stand is, since the manufacturers reserve the right to place them anywhere, according to their design concept. Sometimes on new phones, a sticker is glued with step by step instructions, it can also be found in the User's Guide.

Installing a SIM card

Traditionally, manufacturers place card holders on the right side of the case (if the cover is not removable), or directly under the battery if it comes out. The following instructions are suitable for owners of the latter type of gadgets:

1. Check if your phone is turned off.
2. Detach the back panel.
3. Find a small indentation between the case and the battery.
4. Remove the battery.
5. There you will see SIM card slots. They are different types: separate and two-story. The side to be held up when inserting will be shown next to the holder. Typically, it is inserted with the gold contacts facing down.
6. Insert the battery gently back. Make sure it fits snugly.
7. Return the cover until it clicks. They will mean that the cover is in place.

In the video, you can see how to deal with modern models that do not have a cover removed:

And here is another video with a useful life hack:

Settings

Modern smartphones and SIM cards do not require manual connection. On first launch on a new device from mobile operator package will arrive free settings for all types of cellular services.

In two-seaters mobile devices, management can give a beginner a little difficulty. You can choose a SIM for certain default actions, or choose yourself on every call and message.

Will a regular SIM card fit into the micro-sim slot

You can cut a regular sized card to fit a micro-sim if the card is old. However, it is much easier and safer to contact the service center, where you will be given new sim in the form of a transformer - in all popular sizes.

If the module urgently needs to be replaced with a smaller one, you can cut it by hand with ordinary sharp scissors.

What to do with an unsuccessfully cut SIM card

However, such experiments are not always successful. If the SIM card was incorrectly cut and damaged at the same time, you need to contact the customer service points of your mobile operator. Replacing the card with another sim while maintaining the balance, tariff plan and, directly, the numbers do not take long.

Insert sim that has mechanical damage, Not recommended.

SIM card malfunctions

Users guess about their malfunction when the OS does not see the module and does not indicate it with a corresponding icon. The reasons may be as follows:

• The SIM has expired and is not intended for further use.
• It has mechanical damage - scratches, chips and fractures.
• Unsuccessful pruning. We mentioned it above.
• The phone's firmware is tailored for a specific customer.
• Slot problems.
• Crashes in operating system and software.
• The contacts were damaged during installation.
• Dirt has got on the card holder.

In most cases, the card needs to be replaced, or the phone must be sent to the master for diagnostics, since these can be both hardware and system problems.

Conclusion

Mobile communications and the Internet are available throughout the day thanks to smartphones and small card modules produced by cellular providers. That is why you need to take good care of them, monitor their condition and serviceability. The more gadgets are released, the easier it becomes to use the SIM - their size decreases and the possibilities grow. We hope this article was helpful to you and you received easy-to-read instructions on how to handle them in different situations.

Video

The most common reason why a phone or tablet does not see a SIM card is a damaged SIM card reader. Sim reader, or sim connector, sim receiver is made in the form of a slot into which a sim card is inserted. There are contacts on the SIM card and the SIM receiver, with which they touch when the SIM card is inserted. In case of careless, hasty withdrawal of the SIM card, the contacts of the SIM connector may bend or break off. This often happens when a SIM card is inserted through a nano sim adapter into a micro sim, which can stratify and part of the adapter will cling to the contacts of the sim socket. Damage to the contacts of the SIM receiver can occur if you try to insert a SIM card that is not in size into it, for example, insert a micro-sim into the slot for a regular SIM card, or try to insert it into the slot for a micro sim nano sim map. V modern tablets and in phones, the SIM card is inserted from the side, and not as before, it was laid on top and pressed with a latch. Therefore, if you inserted the SIM card incorrectly or a smaller SIM card is in the SIM slot, it will be problematic to remove it from there on your own. You will have to disassemble the phone or tablet and carefully try to remove the SIM card. If the contacts are slightly bent, then you can try to straighten them, acting very carefully. Naturally, such repairs should be carried out by a qualified specialist who knows how to disassemble the device without damaging anything.

But it is far from always possible to do with such an easy repair. In some cases, in order for the phone or tablet to perceive the SIM card again, it is necessary to replace the SIM card slot. This is a delicate work, in which the faulty SIM reader is first soldered off, and then a new one is soldered. In such work, one cannot do without a microscope and a soldering station. In addition, you need experience and confidence in your capabilities. By the way, not all service center specialists will be able to replace the SIM socket. The master must have developed micro-motor skills and accuracy of hand movement, he must have excellent eyesight. Therefore, in every workshop or service center there are one or two specialists who are directly involved in the soldering of small parts.

Therefore, in no case try to replace the sim receiver yourself and do not trust the first person you come across to do it. In the best case, it may not be possible to replace the SIM socket, and in more severe cases you may be left with a completely inoperative phone, which may not be repairable!

In some models of phones and tablets, the SIM reader is not soldered to motherboard, and joins it through a loop. There is no need to solder here. It is enough to get the required loop, disassemble the device and replace it.

Above was described one of the problems due to which the phone or tablet does not see the SIM card. But there are difficult cases when the SIM socket is not damaged, but the SIM card is still not detected. The first step is to make sure that the SIM card itself is in good working order and is detected in other devices, and the device in which the SIM card cannot be read is not locked under the operator. If everything is in order, there are no locks and restrictions on the use of SIM cards, then the malfunction lies in the motherboard of the phone or tablet. Perhaps the SIM controller, which processes the information coming from the SIM reader, is out of order, or power is not supplied to this controller. This usually happens after moisture gets inside the phone or tablet, or after a strong blow. In this case, either the re-soldering of the necessary microcircuits is required, or their replacement.

The SIM card may not be perceived due to software failure, viruses. You need to try to flash the device.

In our workshop, 48Remont, within a short time, will be able to establish the reason why the SIM card cannot be read and eliminate it. Diagnostics are always FREE. There is a large stock of SIM connectors and cables required for replacement. Therefore, we have the opportunity to eliminate the cause of the malfunction on the day of contact!

Guarantee!

As you know, the main element for identifying a subscriber when using a new phone - a SIM card that stores all information about an account - is of three types:

• Mini-SIM-card, 25 × 15 × 0.76 mm;
• Micro-SIM, 15 x 12 x 0.76 mm;
• Nano-SIM 12.3 × 8.8 × 0.67 mm, the latest approved of all types of SIM cards.

Most devices have a slot that supports mini and micro SIM cards. For touch phones the micro format has become the most common, but some manufacturers have already switched to smaller nano cards, for example, the iPhone from the 5th generation and Sony Xperia in model Z3. In addition, some smartphones support the simultaneous operation of two SIM-cards, such models have the Dual specification in the name, for example, Xperia Z3 Dual.

Inspection of the sim tray for damage

Regardless of the type of SIM card used, it is always placed in a special slot for the SIM card, which tightly holds the card and connects it to the contacts to read information about the subscriber, saved contacts and other information.

The container for the SIM card is most often located under the back cover of the phone, if your smartphone allows you to remove the cover, next to the battery and the memory card slot. For Sony Xperia Z line: for example, Xperia Z1, Z2 and Z3 manufacturer has changed quite significantly appearance devices, leaving in the direction of the non-separable case and taking out all the elements necessary for users to the side frames. Thus, the SIM card slot in the new Sony models The Xperia, like the memory card slot, has moved from the back and is now hidden under tight caps, which are necessary to stay sealed when immersed in water, since Sony's Z-Line is waterproof.

MicroSD memory cards on Sony Xperia are usually installed with a size of 16GB or 32GB, to increase the memory of a mobile phone to store photos and videos from the camera, install applications. Support for larger flash cards is provided specific model, but mostly Sony flagships support 128GB, which is enough for most users for all needs.

Calling a service center to repair a SIM card slot or a flash card slot is not the most common reason for repairs, since it is generally quite difficult to damage the connectors hidden in the case. Most often, the replacement of connectors occurs in conjunction with other repairs, simultaneously with the replacement of other significant elements after the phone has fallen or got into the water.

In any case, if your mobile suddenly stopped seeing the SIM card, and this is the most common device error, then the smartphone becomes nothing more than a player and a camera that does not perform basic functions, and you need to immediately contact the professionals. Sometimes replacing the entire SIM card slot or flash card is not required, the problem can be solved by updating the software, and the flash card may simply not be supported by your model.

On the weekend, a friend brought explay tablet surfer 8.31 3g. When the tablet fell off the table, the back cover of the tablet opened, pulling the SIM card inserted into the slot. Alas, such situations with your favorite gadgets have certainly happened to many of you. However, with a strong desire, this problem can be solved on your own.

As you can see in the photo, the slot was torn out, and on one side, along with the foil glued to the board (blue circle). It's good that this section of the foil is not a track and you can safely put it in place (glue it).

The broken off legs of the slot and their remains on the tablet board are marked with a red circle.

Upon examination, it was found that the SIM card was not fixed, that is, the slot itself was damaged. Of course, I would replace it with another one, but the nearest specialized store where you can buy a slot is 150 km away. Having learned about this, a friend asked me to remove the fixation and put the slot as it is (remove the spring so that the SIM card does not come out). But I could not just pull out these parts, because if I later need to change the SIM card or, for example, I have to open the case, I cannot do without breaking the slot again.

The photograph (after repair) shows that on this tablet model, the SIM-card is inserted deeply and it is almost impossible to pull it out without the ejection mechanism.

Thus, I had to repair the slot itself first.

Removing the metal cover, I saw that the wire that resembled a staple clip (only much smaller) was missing. She fixed a plastic part that pushes the SIM card out under the action of a spring.

The red circle marks the place where the locking bracket should have been.

The wire for the staple needs to be stiff in order to accelerate back, so I made the staple out of spring steel of a suitable diameter.

The diameter was determined by the hole where the native bracket was installed.

Slightly straightening the spring, bent the tip with pliers and bit off. After nibbling, the end of the wire resembled an ax blade. So that he does not damage the plastic parts of the mechanism, he rounded off its end with a diamond file.

Temporarily removing the push-out spring for convenience, put the SIM-card in place and, thus, found out the length of the retainer.

I made the length of the legs of the bracket so that it did not exceed the thickness of the base of the slot. Otherwise, the end of the bracket, which is inserted into the base itself, could damage the tablet board.

On this, the biggest problem when repairing a tablet (slot restoration) ended and another began - installing the slot in place.

Slot installation

If there was a new slot, installation would not have been a problem, but since the legs of the native slot also suffered, I had to tinker with them.

To begin with, I removed the remnants of the legs from the board, half-finished the soldering places with a soldering flux and began to solder. Soldered with an ordinary 40 W soldering iron, although it is better to solder such parts with a soldering station. I started by gluing and soldering the body of the slot, then the legs themselves. The short ends of the slot legs did not reach the place where they were soldered, and the legs had to be extended with a thin copper wire. I had to solder each leg, trying not to touch the already soldered one, and they are at a very close distance (this is not an exercise for the faint of heart). Finally, I wiped off all the places where there were flux residues with alcohol.

If anyone decides to try to fix the breakdown of the SIM card slot himself, I want to warn you: on explay surfer 8.31 3g, the battery is glued to back cover, be careful when disassembling. With a sharp opening of the lid, serious damage is almost guaranteed. At least pull out the battery plug from the board, damage the cables and, of course, the wires that go to the speakers (marked in red).

When soldering, do not overheat the board and slot.

Be careful not to create bridges (blots) between the tracks.

When repairing, it is advisable to have a magnifying glass at hand, preferably a microscope.

A soldering iron needs a small power, or better a soldering station, otherwise the slot may melt and the tablet board may overheat.

Do not use a sharp object (needle) to remove the remaining rosin, as you may damage the tracks on the board.

Memo: if there is no experience in repairing radio electronics, you should not even try, otherwise the consequences of such repairs (already in the service center) will cost much more, or they may not accept the device at all.