Can a Samsung Gravity be "flashed" or "unlocked" to work with Cricket Wireless?

T-mobile is a GSM network operator and Cricket is a CDMA network operator. You cannot unlock a GSM phone to use with a CDMA network. A GSM network locked phone can be unlocked to use with any other GSM network only. If you want to use any GSM network on your Samsung Gravity you need to unlock it using unlock code. You can get the unique unlock code for a Samsung Gravity phone from TheUnlockSpot.com at affordable cost with an easy unlocking guide. Good luck.