https://us.community.samsung.com/t5/Galaxy-S21/S21-will-not-register-to-AT-amp-T-network-after-switching-from/m-p/1930481#M23653 But the Samsung version of at&t. When I bought the phone, it was sprint.. I've since switched to at&t and now I can't check my voicemail cause it's all still on sprint. Fri, 30 Jul 2021 10:59:52 GMT sexyNMbabe 2021-07-30T10:59:52Z