Read SIM Status
tbl, len, txt = modem.sims(fileid)
Uses AT+CRSM=192,XXX to read the response. Decodes using 3GPP 102.221 specs into a table tbl.
AT+CRSM=192,XXX
tbl
len is the value of tag 80 (decimal 128), tbl[128]
len
80
tbl[128]