It looks like infinview wil read either so either should be fine.
Yes (although I had to poke to remember how ), click on your icon on the top right then click on the middle icon of the three that come up on the bottom of that window and you are in the messages interface and new message should do it.
OK here is a functional (but probably not correctly aligned) part. When I get the connector positions I’ll correct it (and maybe improve breadboard some)
edit: Corrected somewhat the pin spacing, still needs work though.
TTGO-T-Call-V1.3-ESP32.fzpz (34.2 KB)
The battery terminals are not in the part as they are on the bottom of the board (and don’t appear to have a + and - set) there are also a number of typos in the pin listing (such as GPIO33 where it should be GPIO26) which were corrected.