Will a SIM Card From a Contract ATT Phone Work in an ATT Go Phone?

By Staff WriterLast Updated Apr 5, 2020 9:58:17 PM ET

A contracted AT&T SIM card works in an AT&T Go Phone; the SIM cards are programmed to function on the AT&T GSM network. An AT&T customer under contract may purchase a Go Phone to replace a damaged phone and place the SIM card in the device.