– Verify that the bands supported by the device match the bands of the network provider – Verify that the antenna is properly connected on the device If you dont get “Registered” response for the AT+CGREG command, ![]() The device should usually find the nearest base station within few minutes (max 15min). If the regisration status is “Searching” or “Not Registered”, that means that the device is not able to acquire the signal from the base station. Then check the registration status of the device. The device above returns that the SIM is ready to use. If the SIM is not inserted properly or if the SIM card is locked, please correct those issues. Once the device us powered up, check whether SIM card is present. If so, it will then send the necessary AT commands to the device to start the data call. ![]() The AT Command tester tool will then check whether the device is already registered in the network. Then you can select a PDP profile and connect. ![]() First, the tool provides an interface to read/edit/delete PDP profiles which contain necessary call set up parameters such as APN, data call type (IPV4 or IPv6) etc. With Online AT Command Tester tool, it is easy to test data calls. How to set up data call with AT commands? ![]() Data Call – AT commands to set up GPRS/EDGE/UMTS/LTE data call
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