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 ...
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 ...