Thanks for the info. Some observations and questions:
1-when I used the board manager version you referenced, I was able to compile & execute, but when switching from DFU mode to COM port mode, the device comes up “unrecognized”. I wound up using this: https://raw.githubusercontent.com/Seeed-Studio/Seeed_Platform/master/package_legacy_seeeduino_boards_index.json and selecting Wio Tracker LTE as the board.
2-I’ve been trying to send SMS text. Everything on the Wio LTE (US) side says it works (serial print messages), but no text messages go through. After talking with Twilio support, they say SMS was discontinued as of late 2021. Are you able to send SMS?
3-Is there any documentation for using the Wio LTE to send POST and GET requests? Documentation seems to be lacking unless you’ve found something somewhere.