Does replacing the Stock ROM with MIUI remove the operator lock that stops you using SIM's from other networks to the one you purchased the phone from? Thanks
Network locks are encrypted on mobile phones with a unique string based on their IMEI number. Only an unique unlock code can remove the network restriction from a mobile phone. You can get the the unique unlock code for a mobile phone either from the respective network provider or from any trusted vendor online. For example you can visit www.Mobile-Unlocker.com to get the unlock code. This site provides accurate unlock codes for over thousands of international mobile models at affordable cost with easy unlocking instructions. Good luck mate.