My trm250 runs only EDGE (only in roaming mode). I have a RUT240 and this one runs with the same SIM Card on LTE without problems.
I thougt the TRM250 was faulty, so i bought a second one, but this also runs only on EDGE, too.
I can´t configure the TRM250 , because Windows 10 configures it automatically ? Only WEBAPN ca be configured.
i hope anyone can help me !