SunCom and Triton PCS?
SunCom was originally a multicarrier affiliate network of AT&T Wireless, but in the late 90s a series of buyouts (TeleCorp bought Tritel and then AT&T Wireless bought TeleCorp) left Triton PCS the only remaining SunCom carrier standing. For some reason instead of droping the SunCom name Triton choose to stay with the brand. Triton PCS and Edge Wireless are the only two independent AT&T Wireless affiliates left (that I know of). With the pruchase of AT&T Wireless by Cingular Wireless it is likely SunCom and Edge will remain independent regional carriers and shift affiliation to Cingular.