This is an older post from when most gps hardware provided only 5 digits. New chip sets provide up to 6 on some cell phone hardware. However
What do the 'extra' decimal places get you? With App Inventgor's LocationSensor's algorithms.The LocationSensor uses the NEMA $GPRMC string to report it’s geocoordinates using only the original available satellite constellations. Some newer hardware will use more constellations and provide a 6 th decimal place.
What do more places get you? Actually nothing because ordinary cell phone gps radios only can resolve at best about 2 meters. Sometimes a little more. Devices with better chips might resolve more BUT only when they use an algorithm that can use the newer satellite constellations.
What a fractional degree of latitude resolves approximately:
Decimal places Degrees Distance
0--------------------- 1.0---------- 111 km
1--------------------- 0.1----------- 11.1 km
2--------------------- 0.01-------- 1.11 km
3--------------------- 0.001------- 111 m
4--------------------- 0.0001----- 11.1 m
5--------------------- 0.00001---- 1.11 m
6--------------------- 0.000001-- 111 mm
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