signal problems xperia z

[edushi]

I have problems with singal.how can I fix it?

[_alexdon_]

Have you tried another SIM?

[Uliwooly]

remove any antivirus and/or taskillers > restart your phone and check again 

[edushi]

I tried 3 different Sim card and nothing I remove Antivirus and task kill and it's the same

[_alexdon_ · Accepted solution]

Visit a sony service:

http://www.sonymobile.com/global-en/support/contact-us/