As of August 30, 2008, SunCom will officially become T-Mobile and will operate under the T-Mobile brand. SunCom customers will be absorbed by T-Mobile and most SunCom dealers will become part of the T-Mobile dealer network.
SunCom operated its own independent GSM network in several southeastern states where T-Mobile has had little presence. The acquisition should have little effect on SunCom customers as T-Mobile operates a very similar GSM network, and a major benefit will be the expanded network coverage provided by T-Mobile. Its expected that SunCom plans will be retired and that customers will need to choose from similar plans offered by T-Mobile.
Read more about the change to T-Mobile here