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Some carriers offer "tablet-only" or "phone-only" SIM cards with unlimited data that won't work in an industrial module. By changing the EC25's IMEI to match a tablet's, users sometimes attempt to bypass these carrier restrictions—a digital "costume party" of sorts. The Technical Tug-of-War quectel ec25 change imei
Connect your EC25 device to your computer via USB. Open your computer's Device Manager. Under "Ports (COM & LPT)", look for the "Quectel USB AT Port". Note the COM port number (e.g., COM3 on Windows) or the device path (e.g., /dev/ttyUSB2 on Linux). This public link is valid for 7 days
There are two predominant methods for interacting with the EC25's EFS to modify the IMEI. The first is the most accessible, using a simple AT command. The second is more advanced, involving the restoration of a full configuration file. Can’t copy the link right now
Proceeding with IMEI modification, even for legitimate restoration, carries substantial risks:
Compare the output with your written IMEI. Then, attempt a network registration:
This is the most common error when using AT+EGMR .