Firstly I'm not sure if I have seen this thread before so I will apologize now if so, and mods please move/remove.
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My 2 daughters are off to stay with their dad in Texas for 3 months in 3 weeks time, if they were to get their phones unlocked in the UK then brought some type of sim card over there (at&t most probably) would this still work?
Thankyou,
CourtneeLouise x