You can check the log whether MR320 identify your modem or not. I think it should be a compatibility issue, you should use a modem listed in the compatibility list.

Is your device a MiFi? If yes , the message is a SMS right? You can login the web page or via tpMiFi to access it.

7350 can only support FDD network type, if your SIM card works in TDD, M7350 can not connect to internet. By the way, M7310, M7300, M7450,M7650 can support TDD.

I think you may enable the 'data limit' function. When the data you used is more than the limit you set, it would send you a warning.

If you mean M7350 can not obtain IP from ISP, Maybe the network type of your SIM card is not supported by M7350 well or there is some strong wireless interference in around your M7350. Below are the...

Leanne wrote I'm currently travelling in USA and have an unlocked M7350 with an AT&T sim. I can't get it to work. The device just says 'no service'. I've tried to change the APN settings but all to...