DoCoMo SC-03E :: Samsung Galaxy S III alpha

Source : XDA-DEVELOPERS.COM

This guide is for the DoCoMo SC-03E (alias DoCoMo Samsung Galaxy III Alpha) owners that wish to unlock their phone, making it SIM Free (SIM Unlock.- Network Unlock), but getting back the original ROM firmware.
Usually, plugging in a SIM card different from the DoCoMo’s ones, you will get the request of a “Network Unlock Code“.
That because actually the phone is SIM Locked.
The official way to get that code is to go to a DoCoMo Shop and pay about 3100 yen.
Then, officially, you can get keeep a SIM-free phone (SIM Unlock.- Network Unlock), even if you did some ROM update. Continue reading