Please guys i need your help. For the past 3 days I've noticed that if I leave my phone on standby it'll switch itself to vibration, turning off the incoming call sound. I'll switch the sound back on and sometimes almost immediately I'll see it switch back to vibration mode. I've not installed any app recently, but to clear my doubt I've tried to remove the latest app I've installed. But it didn't solve the problem. I don't also use any battery saver app, except the inbuilt extreme saver mode that i use once in a while when my b3 is really low.
Anybody that has a solution to this problem please help me out. My phone is gionee F103 pro.

I had the same issue 3 days back too but mine goes to silent mode not vibration. I have tried uninstalling recent apps but sh!t still turns back on to silent mode after a while.

Yesterday, I switched to vibrate mode and noticed its still on vibrate till today

Anyway, I might be resetting or flashing a new ROM on my phone soon.

But did you install any app recently or could it be as a result of an app update.

yazz09:
But did you install any app recently or could it be as a result of an app update.

Installed two apps