This isn’t a scientific test.
My patio at the rear of my house is surrounded on all four sides by the garage, a high inclination to my decking, my neighbours wall, and of course the the rear side of my house. Therefore the amount of sky viewable by the GPS antenna is very limited.
In this area my phone, Samsung S7, reports a GPS fix quite quickly as it reports a 3D fix with just three satellites. The accuracy of this fix is not the greatest, around 40 to 60 feet, but good enough for the average user.
With the Anafi and my DJI Spark placed next to each other the Spark always aquires, according to DJI, a usable GPS fix before the Anafi. This is based on a minimum satellite count of 12. My reasoning for this is that possibly Parrot have chosen a higher satellite count before a reliable GPS fix is registered ensuring a more accurate result. Unfortunately the FF6 application doesn’t appear, I’d like to be wrong, to show the number of acquired satellites but rather a simple red or green GPS status. So to confirm at a later date I should look at the resultant logs in the Flight Manager software.
The original DJI Phantom required only six satellites before signalling a valid GPS lock but this was before such autonomous features as follow me , waypoint, and active track were incorporated into later models. I do have a couple of Phantom 1’s with the Datalink Groundstation installed to facilitate waypoint flying but the function and precision is nowhere near the performance expected with more modern models such as the Anafi.
On a side note I currently have just short of, what I’d call, hobby grade or consumer “Drones” ranging from the small ( Spark) to larger (SLR carrying hexacopter) but since my wife gave me an Anafi for my birthday just before Christmas I have been completely enamoured by the little guy. I’m now just waiting for the weather and my health to improve so I can really exploit its capabilities.