Hi I'm Latvian who is studying in Aberdeen and I want to get new phone since my last one died. I need carrier in UK I was looking at those iPhone 5 + SIM deals but can't decide which one would be the cheapest one. Another thing is that I would need to use my Latvian carrier SIM while I'm in Latvia for summer and winter holidays. Do all UK carriers lock their iPhones? Which one is most easiest to unlock? I saw that on Three network it costs only 15£ and you can do it as fast as after one month of Pay Monthly contract. What do you think?