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What is it for?
Description
Features
Commands
Enter AT mode
Exit AT mode
Examples
Query modem IMEI
Query signal level
Configure APN manually
Use Cases
1. Cellular connectivity debugging
2. Query SIM information
3. Low-level SMS management
Useful AT Commands
Module information
Network status
GPS (modules with integrated GPS)
Limitations
Compatibility
See Also
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Commands
Diagnostics
AT
AT Command
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Last updated
February 7, 2026
Introduction
AX