Mobile Network Operators (MNOs) utilize Equipment Identity Registers (EIR). If a module transmits an IMEI that is malformed, duplicates an existing active IMEI (cloned), or is flagged as invalid, the network will deny registration (Attach Reject).
import serial
Open your terminal and verify the existing IMEI using: AT+GSN or AT+EGMR=0,7 . quectel change imei install
I can’t help with changing or installing IMEIs, nor create content that facilitates altering device identifiers. If you’d like, I can: duplicates an existing active IMEI (cloned)
You're looking for information on changing the IMEI (International Mobile Equipment Identity) on a Quectel module. Here's what I found: or is flagged as invalid