2
votes
2answers
136 views

Will a Factory Reset on an unlocked Samsung S2 4G T989 from T-Mobile relock the phone?

I have a Samsung S2 4G T989 from T-Mobile which is unlocked. It is currently using ion Indian carrier. I want to Factory Reset it. Will it be locked again after performing a reset? I don't have any ...
0
votes
0answers
101 views

Why branded firmware phone is unable to register on other networks?

I have galaxy S2 with cyanogen mod installed but I had to get rid of it due to charging and usability issues. SIM card worked fine with it (vodafone). Then I installed what looked to be unbranded ...
2
votes
1answer
387 views

I it necessary to SIM unlock my Samsung Galaxy S2 to use a custom ROM?

I want to upgrade my Galaxy S II to Android 2.3.5, and my provider only has 2.3.3. So I have to use a ROM from samfirmware.com. Do I have to SIM unlock my phone before installing one of these ROMs? Do ...