@pe3noATo2DOTpl The TB-X306X has a 4G modem for data. The specs are the same when comparing the TB-X306F v the TB-X306X apart from the modem. It may or may not work. What I do know is that the:
TB-X306F 4Gb RAM and 64Gb Storage works and works well.
TB-X306F 2Gb RAM and 32Gb Storage does not work due to no Android 11 for this device.
If I had a TB-X306X 4Gb/64Gb to hand I would try it, but I do not, so cannot recommend that path
until I get more knowledge.
(Apologies, I keep using ROM to mean eMMC storage, manufacturers call it "internal memory")