3G problem Android 4.4.2 lock screen [Lenovo S860]

A

AC Question

Hello,



From sometime now I have a problem with my Lenovo S860. The 3G network stop working when I lock the screen of my phone. If I un-lock it the 3G will signal will come back in 2-3 seconds. This is very frustrating because I can't get any type of notifications when my phone is locked. I've tried everything in settings, restart the phone, even factory reset. Nothing seems to work. If anyone have experienced this or knows the solution please help.



Thank you.
 

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