Hi all, I have legal & unlock Samsung Galaxy Ace GT-S5830i handset. I stay in Canada & tried to use new Virgin Mobile sim and fails..it show full network but when I make call- Mobile Network not available. Then I took my handset to them & they found that my handset (or IMEI) is somehow not compatible with Virgin Mobile Sim. For some good reason I want to use Virgin Mobile Sim hence please suggest what are the my options.(& Of course I dont want to buy another handset) I tried following options too- 1. Factory Resetting of Samsung Galaxy Ace GT-S5830i handset. 2. tried my handset with other mobile sim..it works. 3. tried same virgin mobile sim in other handset..it works I heard about flashing handset..Will that help me to run Virgin mobile sim. Thanks for your time.