Share your experience!
Hello team,
I have Sony Xperia P LT22i with Latest update Jelly Bean , before that on ICS I was also facing the same problem.
Problem : Network bar goes down after every call disconnection for 30-40 sec.
It could be an app acting up (antivirus, taskiller, task manager) or it could be a faulty SIM card. Uninstall those apps and get a brand new SIM card.
Don't forget to give Kudos
Update Service (SUS)
http://www.sonymobile.com/gb/tools/update-service/
http://www-support-downloads.sonymobile.com/Software%20Downloads/Update_Service_Setup-2.11.12.5.exe
Bridge (for Mac)
Alternatives on How to backup Xperias
http://talk.sonymobile.com/thread/36355
Don't forget the Kudos