I have a 2G iphone 2.1 firmware unlocked with quickpwn and on t-mobile network. I'm returned home from being overseas for the last 8 months and i used a international sim card. Everything worked fine but i placed my t-mobile sim back in my phone and wanted to reconfigure my APN setting to epc.tmobile.com for my tzones plan. Now my APN is gone and i have a VPN instead. I never saw that before and really don't know what VPN means. I can still make calls with my phone but can't use my t-zones for internet. If anyone knows anything about this it will be greatly appreciated.
Dont quote me on this....cause my phone's not unlocked.....but I believe there is a fix in cydia you can install to bring the APN settings screen back.