I have a bt.tn with a hologram.io SIM in it. The SIM seems to work (I think have a working test on a handset). The bt.tn requires APN information which, based on searching, is simply “hologram” for the APN plus the phone number I’ve assigned my SIM.
In the bt.tn, there’s just no luck getting it to register. I see that the bt.tn reports 2-of-3 lights for signal strength. According to bt.tn documentation the three flashing red lights I get on the bt.tn indicate “signal level or APN problem.”
I’ve tried just “hologram” and apn.konekt.io (based on a year-old article from a google search) and nothing has worked so far.
I’ve been down the support line with bt.tn and the process I’m taking is correct according to their support.