Default [Q] Xperia Z certain simcard can't be detected

Hello~ Anybody can help me with my issue? I have a Sony Xperia Z, bought in March 2013~ It has been good all these while and suddenly it doesn't work intermittently and now it cannot detect my simcard.
I am a foreginer in Russia, and my Xperia Z cannot detect Russian simcards.. From all the companies..
But after changing it to my Malaysian simcard the phone seems to be working again.

Anybody can help? >< I saved super long for this phone!!!

And my phone is unlocked version
[]network 0
[]networksubset 0
[]service provider 0
[]corporate 0
[]sim 0

It is bought in Russia.
P.S.: I have tried to restart, hard reset, updated to the latest firmware.