Huawei E173 Frequent Disconnection Issues

[@vi]

I have Huawei E173u-2 modem. The modem disconnects itself after some 50-60 mins everytime.

I checked my bro's, who also has same model, his modem also has same issue !

I tried in Windows 7, Windows XP & Fedora 12, the issue exists. I tried with different network modes [2G/3G] & different operators, the damn issue still there.

I updated firmware & tried. Still no luck. It's been more than 6 months, we bought it together from a ebay seller & I doubt he'd RMA it.

So what to do ?

[Minion]

which SIM you are using?It depends on service provider not data card.

[@vi]

used Reliance & Docomo