Is my GPS module broken?

My GPS returns $GPGGA,000250.262,,,,,210,,2,700,,*4C as NMEA. Why there is no latitude longitude? the first value is the UTC time, but there are so many null values ,,,,, Is my GPS module broken?


My Sim808 model is SIM808 Module GPRS SMS Development Board IPX SMA with GSM GPS Antenna

enter image description here

What makes me think why is this broken is because the day before, the module keep giving me location for every second. The lock was almost instant. I use the module at the same place like before. It is weird because the module is so unstable, yesterday was fine but the next day it takes forever to lock location.

  • More likely it just hasn't got a lock on any satellites. What antenna do you have and where is it all situated?
    – Majenko
    Aug 19, 2017 at 9:18

1 Answer 1


Many fields will empty until the unit can get a lock. $GPGSV messages will tell you how many satellites it currently sees, and how strong the transmissions are. The first lock can take several minutes, and it can be very difficult to get a lock indoors.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.