I purchased the GSM/GPRS shield. It is all communicating properly with an Arduino (I can pass and receive AT commands), but it does not seem to acquire a signal. When it start up it sends the following:
The NetLight is doing a medium blank (the 800ms one) that indicates no signal, but I have verified that there is signal and the SIM card is working with another phone at the same location. I am using a AT&T GoPhone SIM card which is unlocked. I am in the United States. If I send a AT+CBAND? I get:
Is there something else that I need to set up or that I can check?
Any suggestions would be greatly appreciated.
PS. Attaching the antenna to the connector is very difficult. It looks to be attached properly, but is there any way to verify it, perhaps with an ohm meter?