This solution may only work if your device gets into water or falls on the ground. First of all I would like to tell you that the network problem appearing on this mobile phone is mainly caused by the network antenna and to solve this problem you will need to check the network antenna line first.
Samsung Galaxy A12 Network Problems, only shows emergency calls and no signal error are among the common problems encountered by Samsung Galaxy A12 smartphone users regardless of operating system. When this issue occurs, you won't be able to send and receive text messages, make or receive calls on your device.
How to fix Samsung Galaxy A12 network problems
Make sure your device's software is fine, has been successfully restored or flashed. Try to upgrade to higher version and burn flash files just fine. Software calibration has been done but nothing seems to happen, you can proceed to monitor, test or replace the respective components shown in the solution above.
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| Samsung Galaxy A12 Network Problems |
Make sure that the PCB board is in good condition and is not bent or damaged.
Also, check for oxidation build-up, clean it up before you can continue.
First check the PA supply voltage, this is coming from the antenna connector and you can monitor it between the capacitors shown on the solution above.
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