I am working with the HL7812 module and facing issues enabling and using GNSS. Despite following the standard AT command sequence, GNSS does not provide a fix and several GNSS-related commands return errors. Below are the complete module details and command logs for your reference. Module Informat…

HL7812 GNSS Not Working – GNSSSTART Resets, CME Errors, FIX NOT AVAILABLE

jyijyi December 15, 2025, 7:08am 2

i saw other user can make the +GNSSNMEA work in newer firmware:

BTW, GNSSSTART return zero means the following:

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