My S2 is not rooted and is locked to 3 UK, it also is still running gingerbread. I would like to give it to my other half to be used on Vodafone UK. Firstly should I get my carrier to unlock it? Also as her current Htc is on ICS, I would like to update to jellybean. Any and all advice welcome as I am not up to date with this and my brain is still running on symbian and I last wrote a program using a BBC micro on "Basic","Pascal" and "Cobol"! Danke.