Onscreen buttons and notification bar

[AC Question]

Some times what happens to my phone, the On screen buttons will not work and after factory restoring only they work.Again after some days(1-2months) it will repeat.why
And also drag and open notification bar will also not work to on/off wifi

 

[B. Diddy]

Welcome to Android Central! Which phone? I'd suggest wiping the cache partition, but need to know the phone model.

Also, try booting into Safe Mode, which temporarily disables all 3rd party apps. On most Android devices, while powered on, press and hold Power until the Power Off menu appears. Press and hold the Power Off selection until the Safe Mode prompt appears. Tap OK.

If the problem disappears in Safe Mode, then something you installed is causing the problem. You may have to uninstall apps one by one until the problem disappears. If the problem persists in Safe Mode, then it's more likely to be a hardware or firmware problem.