I was a Sprint customer when a close friend of mine told me I would get a better monthly rate by porting to Flash Wireless and still be using the the sprint network. That was true for 3 months until the promotional expired and my bill went up almost 100%. When I went to port my phones back to Sprint, I was told that Flash had re-programmed the software of the phone and they were no longer compatible to the Sprint network. Since I owed 5 phones, I was now forced to buy all new phones at almost $2,000 to make the switch.
You may be asking the same questions I asked... "How can the same phone that was with Sprint, then used on the Sprint network no longer be compatible?" Answer: I don't know, but that is the way it works. The bottom line is simple...If you port to Flash Wireless, even though you don't have a contract they control your device and can no longer be used with any other network.
If you are satisfied with Flash Wireless poor customer service and happy with their total control over your phone, then go for it.
All I know, if you change your mine, plan on buying a new phone.
Product or Service Mentioned: Flash Wireless Phone Service.
Reason of review: Poor customer service.