Common basic AT commands

Common basic AT commands
At test whether the connection is correct
Ate0 disables echo. ProgramThe at initialization part first closes the echo.
Enable ECHO for ate1. Run the command on the Super Terminal.
At + cgmi get vendor information
At + cgmr get the version number
At + cgsn get the serial number (IMEI)
At + CIMI get the mobile phone imsi number
At + CSCs get and set the current character set. Can be set to GSM or ucs2
At + CBC get power
At + cclk get set mobile phone clock
At + cnum body number. Divided into line 1 and Line 2
At + CSQ current signal
At + cops network operator
At + csca SMS center number
At + CPMS select the storage location of the text message. Select me (SIM card) and MT (Body)
At + cmgl lists the PDUS of short messages in the specified status Code
At + cmgr list the short message PDU code of the specified serial number
Send SMS at + cmgs
At + cmgd Delete specified SMS
At + cmgf SMS format. Divided into text mode and PDU Mode
At + cnmi
At + csca SMS Center
At + IPR? Show serial port baud rate
At + IPR = 19200 change the serial port baud rate to 19200
At & W Save settings