SMS Tool for 3G/4G/5G modem

• sms tool for various of 3g/4g modem
• read sms as raw pdu or decoded text
• support ucs2 decoding

Usage:

usage: [options] send phoneNumber message
    [options] recv
    [options] delete msg_index | all
    [options] status
    [options] ussd code
    [options] at command
options:
    -b <baudrate> (default: 115200)
    -d <tty device> (default: /dev/ttyUSB0)
    -D debug (for ussd)
    -f <date/time format> (for sms/recv)
    -j json output (for sms/recv)
    -R use raw input (for ussd)
    -r use raw output (for ussd and sms/recv)
    -s <preferred storage> (for sms/recv/status)