I fly a Mini 2, my first drone, bought about a month ago. I transitioned to the litchi app a week ago, because I wanted the additional features like waypoints and the various follow modes. Certain follow modes require GPS location services in the device connected to the RC, and I was curious about how accurate that information was. I fly with an iPhone 11, about three years old now.
I placed the connected drone on a certain spot on my driveway, which has stone lines arranged like a 3 Meter grid, and visible from within Google Maps. After connecting to some 18 GPS satellites, the drone icon placed itself on the map exactly right (within a Meter)–very impressive. Clearly the Mini 2 has a sophisticated GPS receiver, probably a dual frequency model, to get this kind of location accuracy.
I stood by the drone, and the blue dot that shows where the RC/iPhone thought it was danced around a bit, but was 5 Meters west of the drone icon, on the average, and it stayed there. The dancing was about 2 Meters, more or less, in random directions. I picked up the drone and walked 10 Meters north, and the drone tracked perfectly. So did the RC/iPhone, but it maintained the same bias to the west.
So my question to the community is, do other iPhone models, and Android phones, have similar location accuracies as mine? The test is easy to run in just a few minutes–no flying needed.
I would expect iPads that have GPS chips (cellular service models only) would have similar accuracy. My iPad has no GPS chip, but determines its location using WiFI, if so connected. Seems to have about a 30-60 Meter error with my home WiFi service. I was hoping that when I connected the iPad to a WiFi hotspot generated from my iPhone, that it would get the accuracy of the iPhone, but it did not. It still the same miserable 30-60 meter performance.