Activity phone not responding - problem with calling

[Urbancrash]

Hi,

I bought my Sony Xperia P a few months ago and I have been experiencing trouble with calling and receiving calls. When it rings, I can't answer the call, it freezes and stops responding. Or I answer and it continues ringing while I talk to the other person. Similarly, when I try calling somebody it stops responding; sometimes the other person can hear me, but my phone takes around 20 seconds to respond. I usually have to restart the phone in order to use it again.

Hope anybody can help

[_alexdon_]

Do you have any task-killers or antivirus?Also,do not use free ram apps or cleaning apps.

Restart if one of the most important process to take place in an android device,it refreshes the phone os and resets the RAM memory.

[FilipN]

I'm experiencing the same problem. I suspect that Viber may be causing this because it uses core functions of the phone. I'll trying uninstalling Viber for some time and see if this solves the issue.