Alarm problem

[batistuta16]

Sony HELPPPPP

Sometimes alarm and massage tone didnt play. This is a big problem, but after restarting all is ok(i must restarted every 3 days). This is system problem but phone have new software. What is your solution how can i solve the probelm?

[_alexdon_]

Can you check if the same occurs in safe mode?

http://talk.sonymobile.com/t5/FAQ/How-to-boot-your-phone-into-safe-mode/m-p/348008