Xperia active's network issue

[ravijha]

I'm using this phone in roaming. Everytime I start my phone I get this message "NO SIM" and also my network drops. I have to restart my phone to get the signal back. This happens every hour. I tried using different sim, it works fine with the handset, even the roaming sim works fine on other handsets. Its just the roaming sim and xperia faces the network issue

[Samuel1]

Hi and welcome to the community! Since you're new please be sure that you have checked out our Discussion guidelines.

I suggest that you try to repair the phone software using PC Companion..

Before repairing your device you may want to backup your information first. Check out this topic for more information on how to.
How to backup?

If the issue should still remain I think that this needs to be examined and fixed at a repair center. For more information about how to submit your phone for repair and where, contact your local support team.