User

[Med16696]

I have Xperia m4 aqua, the vibration sometimes doesn't work then it work after while again I tried to fix it with sony pc companion but nothing changed

[xavinux · Accepted solution]

Hi @Med16696

Please, also verify if you have this issue when you boot your device into safe mode as explained here. If the issue is not present in this mode, that indicates a third party app is causing the problem. In this case exit Safe Mode and then un-install any third party apps you don't need and clear the cache/data for the apps you want to keep.