I recently purchased 2 Sprint Iphone 6 refurbished from Wal-Mart and both came unlocked to all 3 other major carriers in US. I am intending to use these phones in Europe and tried to contact Sprint to make sure it is also unlocked for international use, but they will not talk to me because I don't have an account with Sprint (tried both - chat and phone). Does anyone know if the Sprint IPhone unlocked in US will work with carriers in Europe, or I should just return the phones and stay away from Sprint branding as far as I can. PS: I actually bought 3 Sprint Iphones and one of them was locked. I tried to go through Sprint to unlock it, but that proved to be major hassle and even though some CS reps promised the unlock to work within 3 days, it was actually never unlocked. Now two weeks later it seems like I am hitting a stone wall and no one will talk with non Sprint customer, which btw is a sure way to drop possible future customer off the list.