Same here. No SIM detected and my SIM isn't locked. Tested Manjaro's Alpha 3 and it recognized the SIM and connected to data.
Just saw the commands over here. Seems to be working. https://forum.pine64.org/showthread.php?tid=8923
Just saw the commands over here. Seems to be working. https://forum.pine64.org/showthread.php?tid=8923