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Samsung S4 screen occasionally appears linear white line or black line. What is the reason?
According to the situation you described, first rule out the third-party software problem of mobile phones. I suggest you:
1. Check whether the third-party software is newly downloaded and installed on the mobile phone. It is possible that the software is incompatible with the mobile phone, so I suggest you try to uninstall it (Settings-More-Applications-Select Download-Uninstall).
2. If the normal display is not restored, there may be something wrong with the mobile phone system software. It is recommended that you back up your mobile phone data (phone book, SMS, multimedia files, etc.). ) and restore the factory settings (Settings-Owner-Reset-Restore the factory settings);
3. If the problem still exists, it may be that there is something wrong with the mobile phone hardware. It is recommended that you take the three-guarantee certificate of your mobile phone and send it to the nearest Samsung service center for testing. Please visit: /servicelocation for the specific service center address.
Wish you a happy life!
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