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PSA: You need one small but very important thing to access T-Mobile's standalone 5G network - PhoneArena
T-Mobile is reminding holdout Sprint customers to switch to a T-Mobile SIM card by May 1st or else - PhoneArena
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Amazon.com: Sprint UICC ICC Nano SIM Card SIMGLW436C - iPhone 5c, 5s, 6, 6 Plus, 6S, 6S Plus, 7, 7 Plus, SE, iPad Air, iPad Air 2 : Electronics
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