GPS accuracy between pro and non-pro model

The phone is technically capable of this accuracy level, unfortunately the apps are not. I'm not sure why this is but blindsquare still gives me the same accuracy level as before when I tested it out. The improved U2 chip may give slightly more reliable airtag finding range though, hard to tell, which helps with the airtag I have on the inside of my front door and that can give accuracy to within 10cm.

They are entirely different things but the upgraded GPS and upgraded ultrawideband chips both exist on the pro models, that's why I mentioned them. That and the fact that for very limited situations the airtag can be used as a navigation aid instead of a lost item finder, not an intended use case.

Hello,
As you mentioned, the navigation on Pro models is indeed more accurate than on regular models. However, this likely won't be practically useful for you. This so-called accuracy is primarily targeted at drivers. For example, a user with a 16Pro driving on the highway can precisely identify which lane to take due to the dual-frequency GPS support, making it harder to make wrong turns when changing roads. But for us visually impaired individuals, if we're walking, there's almost no noticeable difference. Leaving aside navigation accuracy, even the points of interest we rely on in maps often have significant labeling errors. For instance, when you search for a restaurant, the location provided by the map might be three or four meters away from the actual entrance. This poses no issue for sighted people, but for the visually impaired, such an error can be critical. So don't consider the Pro model just because of map-related issues.

As I stated if you have consistent access to a location and permission such as your home you can place an airtag on the inside of the door to help you locate it once you're within a few feet. Very niche but for finding the door of your home it's extremely useful.

It's a shame this isn't more widely available as public beacons, I'm not sure how this relates to the iBeacon concept I heard mentioned in the past. Having a publicly visible and hopefully mains powered version of an airtag located on or above shop doors for example would be extremely useful and wouldn't cost all that much relatively speaking.

I live out in the country, and Apple maps finds my address about 100m east of where it really is. It is a bit better with the nearest road corner, hits it between 5 and 20 M, which to my mind isn't great. This is with a non-pro model. The second problem might be improved with a pro phone, but the first one is just bad mapping and will likely always be that way.

I noticed no difference in GPS accuracy between my older phone and my 16 pro. Blindsquare still only gives me a reading of 4 metres accuracy.

Are you sure that 100 metres error from your address is the GPS and not the map data? I know map data can have issues especially in more remote areas. As an example they often calculate address numbers on a street by dividing the length of the street by the number of properties, meaning if the street has a lot of big houses at one end and smaller ones at the other it can throw it off.

I'm not saying that the Pro model's map accuracy is necessarily more precise, but because the Pro has dual-frequency GPS, it can receive GPS signals more easily compared to non-Pro models. This means that even in obstructed areas, the Pro model can generally complete navigation smoothly. Conversely, if you're using a non-Pro model, when walking on city streets with many tall buildings, you're more likely to encounter situations where the map loses GPS signal and gives incorrect directions as you walk.