Ipad 3 IOS 8.2 3G problem, no internet

I just upgraded my ipad 3 to IOS 8.2 and after the upgrade, internet over 3g has not been able to work at all. I tried airplane mode, resetting network setting, soft-resetting the ipad, on/off the ipad, restoring it to previous back-up through itunes and all were useless. It has been few days like this so appreciate if someone can help over this matter as it is getting really annoying having a tablet that cannot work without wi-fi. Tried calling my service provider but it seems that they have no reported issue from their side so I guess it is on the device. It was working perfectly fine before the upgrade.