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by mschuster91 1145 days ago
Everyone operates an AGPS service these days. Without it, you'd have to wait at least 12.5 minutes from a fully cold start (and likely, if you missed a data packet, double or triple that) until the GPS receiver has all the almanac data [1].

[1] https://en.wikipedia.org/wiki/GPS_signals#Almanac
1 comments
mrfumier 1144 days ago
In my old Nokia N95, the AGPS data was downloaded when starting the GPS app.

No need to require a constant background download.

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prmoustache 1144 days ago
this.

I may actually use gps once or twice a week only, disable geolocalisation when it is possible on all apps I am using.

There is no justifiable reason to say gps is not possible without this. Besides you should be able to decide you don't mind waiting 15 minutes to get full gps service.

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rcxdude 1144 days ago
Also there's not really any good justification for the amount of data sent with the AGPS request. It can be a super plain HTTPS request with nothing else, instead of sending basically all of the tracking data from the device, including from what I can tell the IMEI which google doesn't even let app developers access anymore.
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ianburrell 1144 days ago
There is no private data in the request. The request is HTTP and authors could have analyzed them and discovered there is nothing in them. Instead, they published a list of things that Qualcomm privacy policy could include.
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rcxdude 1144 days ago
Do you have an actual copy of a example request (with all headers) from an manufacturer's ROM? There's a lot of discussion but no-one has actually posted the full HTTP request, but there is a lot of stuff which indicates there might be a lot more information in the request on official ROMs (especially those using qualcomm's daemon). I know grapheneOS keeps it to the bare minimum required.
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ianburrell 1143 days ago
The response post I was reading (and got posted here) didn't include any details. I can't tell if they actually looked at the response or were depending on someone else. But that is better than the original article that didn't even look.

Why would you expect any private data to be sent when requesting static file? That would slow down both the client and server.

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