I have recently bought a GL-M2 with 5G modem (Quectel RM520N) and I am struggling to get the 5G connection up and running on it and I think I need some advice to get it running correctly.
I use the GL-M2 with GL-AX1800/Flint through the USB port on AX1800 and the carrier is Three UK. I have tested the Three SIM card on a spare iPhone Xs and even on the GL.iNet GL-XE300/Puli and the SIM works with both.
However I just cannot get it to work on the GL-M2 after trying with permutations of different modes (3G/QMI/QCI) with different possible Three UK APNs - “three.co.uk” and “3internet” from search engines - all have failed to work. And I have tried to reboot the modem and the router as well and still no luck.
I also contacted support from Three UK for any configuration advice but they insisted I use the auto configuration and keep directing me to the manufacturer of the 5G modem so no real help from the service provider either.
Any help/advice would be appreciated, and many thanks in advance.
First, you need to check that the antenna of the module is inserted correctly
You can then try to connect to 4G first by executing the following commands over ssh.
gl_modem -B 2-1 AT AT+QNWPREFCFG="mode_pref",LTE
Please use the double quotation marks in English format
gl_modem -B 2-1 AT AT+CFUN=0; sleep 1; gl_modem -B 2-1 AT AT+CFUN=1
