Help Data not working


I have an active data plan and also enabled data from the phone settings for my Samsung Galaxy Fit (Android 2.2) however my data is not getting switched on. I have tried to reset the phone from Privacy after which it worked for few hours then again it got automatically switched off. I have tried restarted the phone, it gets on for few seconds then gone :(
I verified the APN settings to be correct too
I have tried to use the same SIM card on my different phone (hTC Wildfire) and works fine. There is no carrier issue as my wife and I have the same carrier and all works fine on her hTC.
Any suggestions would be highly appreciated.


Hello gourabd.,
I too had faced the Same problem with sg should reset mobile AP settings (reset to default).if the problem persists you can upgrade your device from the nearest service center to fixes the would be free if if the phone is under warranty....