| Command | Description | |---------|-------------| | AT+CSQ | Returns signal strength (RSSI) and bit error rate | | AT+COPS? | Displays currently selected network operator | | AT+COPS=? | Lists all available network operators |
These commands interact with the SIM lock status of the modem or router.
REM Check Credits echo Checking credits... dc-unlocker.exe ^credits timeout /t 2
AT^SETPORT? — Checks the current configuration of USB virtual ports on Huawei devices.
: These perform specific, immediate operations, like checking signal quality with AT+CSQ .
To use these commands, open DC-Unlocker, detect your device, and navigate to the "Advanced"
, or a ZTE router, unlocking the device allows you to use any SIM card worldwide.
: Forces the device into 4G/LTE Only mode. ZTE Specific Network Commands AT+ZSNT=1,0,0 : Sets network mode to Automatic. AT+ZSNT=2,0,0 : Forces the device into 2G Only mode. AT+ZSNT=3,0,0 : Forces the device into 3G Only mode. AT+ZSNT=4,0,0 : Forces the device into 4G Only mode. 4. Signal Strength & Performance Optimization
: Formally requests the revision/firmware identification.
: A critical command for Huawei modems to check SIM lock status. Example response: ^CARDLOCK: A,B,C A : 2 means unlocked; 1 means locked. B : Number of remaining unlock attempts.
