Auto vibration mode on

[arslan_2020]

After missed or droped call phone automatically change ringtone mode to "only vibration". Use the phone about 3 days. System version 4.1.2. Installation of profiles managing program (Sound Profile) don't help((

PS

Same problem on Xperia P (here)

[arslan_2020 · Accepted solution]

I think I found of problem source - it's my antiviral application - COMODO Mobile Security - it's last update. At some other (samsung) forums people talk about AVG, that causes just about the same behavior.

[Uliwooly]

uninstall any of this apps

taskillers

task managers

antivirus

ram apps

battery apps

booster apps

and check again