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You can use either GSM or CDMA SIM kits with this phone.
Sorry, there was a problem. Please try again later.See: Google search gsm cdma unlocked Can CDMA be used on GSM , Nov. 1, 2016 Differences between unlocked GSM and CDMA phones Mobile Unlocked > support> articles> 2 My experience: I just bought an S8+ Unlocked phone. I use AT&T as my service providers. An AT&T SIM card was installed at Best Buy - and activated. I had a seamless transfer of service. My understanding is that I own the phone and can go to any provider. No contract.
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