I have a verizon galaxy s8 that I am using with an AT&T sim. Everything works on the device, even data, sms and mms. But when I try to make a call it says "No SIM, or SIM error." I don't know how.
UPDATE: I solved the issue by changing the band from CDMA to GSM. Now everything works!
UPDATE: I solved the issue by changing the band from CDMA to GSM. Now everything works!
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