iPhone 5 locked to Sprint - activate and unlock for UK
(I've used these forums before but I lost my old account. :( Also there is no iPhone 5 sub-forum - if there is, sorry for posting here!)
I have an iPhone 5 which was gifted to me by an America-residing uncle. Unfortunately, it had a Sprint sim in there when I opened it up so I cannot activate it or use it with another sim, and I cannot even activate it on Sprint outside the US as I live in the UK.
However I know there are ways to unlock / activate the phone.
Is there any method which is the safest or preferred method?
Thanks so much.