It is possible to use t-zone on any handset. However, Access point in GPRS must be configured. I think it is wap.voicestream.com . In the past, I've used Nokia 6100 from cingular. I called t-mobile for help. They had no idea how to configure since it was not t-mobile handset. I told the rep to give me the configuration of their Nokia handset 6610, which has the same OS. My phone works on t-zone and it is MMS capable. V600 is similar to V300. I think you can do the same.