We've added much more detailed information on cellular-based A-GNSS (Assisted Global Navigation Satellite System) to our FAQ:

https://grapheneos.org/faq#other-connections

It explains the difference between control plane vs. user plane A-GNSS, differences between the devices and what we improve.

#grapheneos #privacy #security #geolocation #gnss #agnss #supl #qualcomm #snapdragon #broadcom #tls

Our next release will override carrier selected SUPL server (usually supl.google.com) with supl.grapheneos.org by default. Similar to connectivity checks, etc. there will be a new Settings toggle for choosing between GrapheneOS proxy, Standard and Disabled for SUPL.

#grapheneos #privacy #security #supl #agnss #gnss #geolocation #location #carrier #baseband #qualcomm #broadcom #google

GNSS (GPS, GLONASS, etc.) uses PSDS to provide satellite almanacs with estimated satellite locations, geographic data, etc. for a faster location lock. We cover this at https://grapheneos.org/faq#default-connections.

A-GNSS is also used to provide a faster location lock via cellular when available.

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