Can you use a tmobile blackberry phone with sprint service?
If you want to use your Blackberry Phone with other network provider,you can use T-Mobile GSM phone with only GSM network prepaid sim card.But for this you need to unlock it.Which country T-Mobile network it is locked now,IMEI number,Model ?Get unlock code from the site Unbblock.com and unlock from network lock easily.You can use any GSM network sim card.You cannot use CDMA network sim card after unlock it.Sprint is CDMA network,so you cannot use with it after unlock from T-mobile network.