You need to Unlock the mobile phone from network lock to use T-Mobile phone with other GSM Network Sim card...then revol is GSM network SIM card means you can surely use it after unlock it..It's CDMA network means you cannot use with that...You can Unlock the GSM Network Locked Phone easily using the unlock code...You can buy the unlock code from the site Onlinegsmunlock.com and unlock it easily........