If i change the rom of a xperia does the sim lock (only working from 1 operator) will it dissapear? What can I do to remove sim lock on the phone?
Changing your ROM will not simunlock your phone. Your carrier may give you the code to do it, or their are websites that you pay for an unlock code. Most of them are fairly cheap ($5-$10). The most expensive one I have seen is for the Note which is $25. That being said, once you are sim unlocked, changing a ROM or doing a factory reset will not re-lock the Sim.