Always check the existing IMEI before making changes. Use:
AT+CGSN=1
Example output:
+CGSN: 123456789012345
OK
Or use:
AT+CGSN
(Returns IMEI without label.)
Make a note of this number. You may need to restore it later.
This is the cleanest method provided by Quectel. It uses the standard Hayes command set extended by Quectel.
You cannot simply type 15 random numbers. An IMEI is validated by the Luhn algorithm (Mod 10). If you write an invalid IMEI, the modem may accept it, but the cellular tower will reject the registration request (Location Update Reject). quectel ec25 change imei
Validation Logic:
If writing a custom IMEI for testing, ensure you calculate this checksum.
Changing the IMEI of a Quectel EC25 module typically involves using AT commands. AT commands are a set of standard commands used to control a modem. Here’s a general guide on how to do it: Always check the existing IMEI before making changes
Unlike consumer Android phones where ADB is the primary interface, EC25 modules are usually accessed via:
There are two primary methods to write an IMEI: