GPSTest displays real-time information for satellites in view of your device. A vital open-source testing tool for platform engineers, developers, and power users, GPSTest can also assist users in understanding why their GPS/GNSS is or isn't working.

Supports dual-frequency* GNSS for:
• GPS (USA Navstar) (L1, L2, L3, L4, L5)
• Galileo (European Union) (E1, E5, E5a, E5b, E6)
• GLONASS (Russia) (L1, L2, L3, L5)
• QZSS (Japan) (L1, L2, L5, L6)
• BeiDou/COMPASS (China) (B1, B1-2, B2, B2a, B3)
• Various satellite-based augmentation systems SBAS (e.g., GAGAN, Anik F1, Galaxy 15, Inmarsat 3-F2, Inmarsat 4-F3, SES-5) (L1, L5)

*Dual-frequency GNSS requires device hardware support and Android 8.0 Oreo or higher. More at medium.com/@sjbarbeau/dual-frequency-gnss-on-android-devices-152b8826e1c.

Menu options:
• Inject Time Data - Injects Time assistance data for GPS into the platform, using information from a Network Time Protocol (NTP) server
• Inject XTRA Data - Injects XTRA assistance data for GPS into the platform, using information from a XTRA server (see goo.gl/3RjWX for details on gpsOneXTRA)
• Clear Assist Data - Clears all assistance data used for GPS, including NTP and XTRA data (Note: if you select this option to fix broken GPS on your device, for GPS to work again you may need to ‘Inject Time’ and ‘Inject XTRA’ data)
• Settings - Switch between light and dark themes, change map tile type, auto-start GPS on startup, minimum time and distance between GPS updates, keep screen on.

Beta versions:
play.google.com/apps/testing/com.android.gpstest

Open-source on Github:
github.com/barbeau/gpstest

FAQ:
github.com/barbeau/gpstest/wiki/Frequently-Asked-Questions-(FAQ)

GPSTest discussion forum:
groups.google.com/forum/#!forum/gpstest_android

Nostalgic for old releases? Don't have Google Play Services on your device? Download old versions here:
github.com/barbeau/gpstest/releases

If you want to see the map on the Map tab, you'll need to install Google Play Services.

Also available on F-Droid:
f-droid.org/packages/com.android.gpstest.osmdroid/

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Want to measure the *true* accuracy of your GPS?

Check out GPS Benchmark:
play.google.com/store/apps/details?id=com.gpsbenchmark.android
From version GPSTest 3.2.10:
• Beidou B1C carrier frequency - B1C is now shown correctly for Beidou satellites in CF column
• Option for turning off background GNSS use - If enabled, will turn off GNSS when using the Home and Multitasking buttons to leave app
• Bug fixes - see bit.ly/gpstest-releases
Variant
Arch
Version
DPI
(Android 1.6+)
Latest: 1.0.8 on June 22, 2013
(Android 2.3+)
Latest: 2.1.10 on November 27, 2016
(Android 4.0+)
Latest: 3.2.10 on February 6, 2019
All versions
February 6, 2019
December 13, 2018
November 30, 2018
October 31, 2018
October 25, 2018
October 19, 2018
August 21, 2018
November 27, 2016
June 22, 2013