Skip to content

Instantly share code, notes, and snippets.

@soupslurpr

soupslurpr/gnss-ttff-test-results.md

Last active April 18, 2025 07:45
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save soupslurpr/844230650095061c3b11ac3a955080d2 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save soupslurpr/844230650095061c3b11ac3a955080d2 to your computer and use it in GitHub Desktop.
Download ZIP
GNSS TTFF (time to first fix) test results
Raw
gnss-ttff-test-results.md

TTFF reported by SatStat in seconds, each measurement is recorded at the same location and is after doing adb shell, su, rm -rf /data/vendor/gps, rebooting the device (akita), and then waiting 60 seconds (by opening the Clock app and running stopwatch) to make sure the device has settled and is connected to cell towers.

Make sure a SIM is enabled.

unless otherwise stated: PSDS is on, network location is off

Setting Trial 1 Trial 2 Trial 3 Trial 4 Trial 5
SUPL on (GrapheneOS proxy) 26 15 26 287 48
SUPL on (GrapheneOS proxy), network location (fake location: Texas (im in LA, so not too far off)) on 64 266 9 12 76
SUPL on (GrapheneOS proxy), network location (fake location: Paris, France (very off)) 4512 1345
SUPL off 153 680 264 992 134
SUPL off, network location (fake location: Texas (im in LA, so not too far off)) on 7 11 19 11 14
SUPL off, network location (fake location: Paris, France (very off)) 3007 2427
SUPL off, network location (fake location: New York (more off than Texas but not very off)) 18 99 442 249 56
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment