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I recently purchased a Huawei E220 modem, which was branded by PhoneCompanyA, and I wish to use it on PhoneCompanyB's network using a SIM card from PhoneCompanyB. PhoneCompanyB's 3G network uses the 850MHz and 2100MHz bands, both of which this modem supports.
However when I try to use the modem, it will not connect to the network. When I try to do it manually with AT+COPS=1,2,53000
I get CME Error 30: No network service
which is odd because when I put the SIM card in my cell phone I get plenty of service.
Is there any way I can get this modem to work with this SIM card?
1Has the the modem been 'rooted' or 'upgraded' with a custom firmware? Just because it's got a name on the box doesn't mean it's in the state at which it was manufactured! – Dave – 2014-02-21T13:02:36.043
I've upgraded the firmware to the latest available: 11.313.02.00.01 and still have the same problem. – DanielGibbs – 2014-02-22T01:22:30.990