AT+EGMR=1,7,"new_imei_1" // Write IMEI (slot 1) AT+EGMR=1,10,"new_imei_2" // Write second IMEI (if dual-SIM) AT+EGMR=2,7,"new_imei" // Alternative method AT+GSN // Read IMEI after change

: Known for being difficult to set up on Linux; it requires specific drivers like the xmm7360-pci project to function [3, 5, 10].

Changing the IMEI on a Fibocom L850-GL LTE Module: Methods, Challenges, and Reality

For Dual Sim Phones * Rooted Android phone or tablet. * Install Android terminal emulator app. * Open android terminal emulator. * IMEI change - Routers - GL.iNet Official Forum

Before attempting any hardware or software modifications, you must understand the risks involved:

Type: AT → You should see OK .

: Mobile network operators frequently use the Type Allocation Code (TAC)—the first 8 digits of the IMEI—to distinguish between a smartphone, a tablet, and a dedicated data modem. Many unlimited or low-cost data plans are strictly locked to smartphones. If a user inserts their SIM card into an un-modified laptop modem, the cellular carrier identifies it as a data-only terminal and blocks or throttles the connection.

Most L850-GL modules hide the AT command port (COM port) used for low-level access.