How to remove a blue circle mark from Samsung mobile phone a5?

According to your inquiry, strict mode should be opened for you. I suggest you try the following:

Method 1: Enter the phone settings-developer options-remove the "strict mode" check-restart the phone settings to take effect, thus removing the blue border display around the screen.

Method 2: Back up the data of the mobile phone (phone book, SMS, multimedia materials, etc.). ) and try to restore the phone factory settings (Settings-Reset-Restore Factory Settings).

If the problem still exists, it is recommended that you take the three-guarantee certificate and send your mobile phone to the nearest Samsung service center for testing. Please visit the specific service center address:

. Samsung . com/support/service locations . ASP