problem with 4g modem

[admin]

Replace the whole sendsms function with this and check if it works. Also check if you have any messages in Logs.

Code:

function sendsms(number, message)
  local client, err = require('socket').udp()
  if client then
    client:sendto(number .. ' ' .. message, '127.0.0.1', 12535)
    client:close()
  else
    log('failed to created socket: ' .. tostring(err))
  end
end