Hey,
I understand that the Quectel RM520N-GL modem in GL- X3000 supports data only.
There's a one person who has nonetheless made phone calls without voice in Quectel forums.
Some prepaid SIM cards require a "phone call" into a specific settings number like *123#
before they can be used. Would this be possible directly with GL-X3000 without activating the SIM card on a phone before usage?