2 [Con] Network Band Confusion

T-Mobile and Sprint both use different radio bands for their respective network: T-Mobile uses GSM, while Sprint uses CDMA. This could cause confusion for consumers with devices locked to one band or the other.

If the merger goes through, Sprint’s customers will be gradually transitioned to T-Mobile’s network. To be fair, most modern smartphones support both CDMA and GSM. But roughly half of Sprint’s customer base will need to purchase new devices that support the appropriate radio band.