| AT+CMEE=2 |
enable the extended error codes to get a verbose format |
| AT+CPIN? |
Now get the status of SIM presense |
| AT+CLCK=”SC”,2 |
let us check if PIN lock feature is enabled using facility lock AT command |
| AT+CFUN=1,1 |
reset the device for SIM PIN changes to take effect |
| AT+CPIN=”1234? |
Unlock SIM PIN |
| AT+CPWD=”SC”,”1234?,”4321? |
Let us change the SIM PIN code / 1234 is current code, 4321 is new code |
| AT+GSN |
Request International Mobile Equipment Identity (IMEI) |
| AT CFUN=1 |
Set Phone Functionality as Full (will turn on the radio) |
| AT CFUN=7 |
will turn off the radio |
| AT QCCID |
Show the SIM card’s Integrated Circuit Card Identifier (ICCID) number |
| AT+COPS=0 |
Automatic Operator selection |
| AT+COPS=? |
Operator Status 0: Unknown / 1: Available / 2: Current operator / 3: Forbidden |
| AT+CSQ |
Signal quality report |
| AT^SETPORT? |
Displays the current configuration of the device. |
| AT^GETPORTMODE |
Display mode modem that is currently active. |
| AT^HSDPA=1 |
AT^HSDPA command is used to enable/disable HSDPA support. |
| AT^CLAC |
AT+CLAC AT command lists all AT commands supported by the mobile. |
| AT+CGMI |
This AT command returns information about device manufacturer. |
| AT+CCWA=0,0,1 |
disable call-waiting |
| AT+CFUN=1,1 |
reboot modem |
AT^CARDLOCK=“” |
send unlock code |
| AT^SYSCFG=13,0,3FFFFFFF,0,3 |
modem 2G only, automatic search any band, no roaming |
| AT^SYSCFG=2,0,3FFFFFFF,2,4 |
Any |
| AT^SYSCFG=13,1,3FFFFFFF,2,4 |
2G only |
| AT^SYSCFG=14,2,3FFFFFFF,2,4 |
3G only |
| AT^SYSCFG=2,1,3FFFFFFF,2,4 |
2G preferred |
| AT^SYSCFG=2,2,3FFFFFFF,2,4 |
3G preferred |
| AT^U2DIAG=0 |
enable modem function only |
| ATI |
get relevant information from modem |
| ATZ |
reset modem configuration |
| AT+CIMI |
read IMSI |
| AT+CLCK=“SC”,0,”” |
disable PIN verification |
| AT^CVOICE=0 |
enable voice |
| AT^CVOICE=1 |
disable voice |
| AT^CVOICE=? |
check voice status |
| AT^U2DIAG=0 |
switch the device in modem mode only / will force the modem into serial modem mode every time it’s plugged in |
| AT^U2DIAG=1 |
device in modem mode + CD-ROM |
| AT^U2DIAG=255 |
modem mode + CD-ROM + Card Reader |
| AT^U2DIAG=256 |
modem mode + Card Reader |
| AT^U2DIAG=375 |
will get back into HiLink mode |