Help GT-i9000 at&t service disconnects often

[vammov]

Hi all,
I recently bought an unlocked international version of samsung galaxy S GT-i9000. I was able to use it with at&t sim card quite happily till now. Even the 3g worked on it. But from yesterday the at&t service keeps disconnecting after using for few hours. The network bars at the top right disappear and a blue disconnected sign appears. I cannot make a call or receive a call till I reboot my phone. In settings->about phone I see that the "Service" shows "Not in Service". When I reboot it gets back to "In Service".

Did anyone face this problem before? Is there any solution for it? My unlocked phone boots with T-mobile preset settings - is this problem because of that?\

Someone please help.

 

[DocTee]

Hi Vammov. I also have the SGS international unlocked version, using my AT&T sim. I never had that problem as you described. I've only had my phone for month though.

What area are you in where you're having the problems? Does it occur in specific service areas?

Hope your issues will be resolved soon.