GPS, or the Global Positioning System, is a global navigation satellite system that provides location, velocity and time synchronization.
If you experience any of the following, your activity may report a different distance than you actually traveled, and, unfortunately, it will not be possible for us to “fill in” the missing data or modify the existing data. Thankfully, there is more that can be done to prevent bad GPS data from being recorded than there is to repair it. Please refer to the troubleshooting steps listed in this article to prevent similar issues in the future.
To achieve fast startup and high-accuracy position estimates, you should provide:
Turn your phone off/on.
Turn location services off/on.
Close all other open applications before recording and if you open another app during your activity, navigate back to QPaws afterward.
Ensure that your phone isn’t connected to a WiFi network when you start your activity.
Open QPaws when you have a clear and unobstructed view of the sky and wait a few more minutes than normal before starting your activity even if you see a message that says ‘GPS Signal Acquired.’
Perform a GPS reset:
Double-tap the home button. This will bring up tile-sized images of all currently running apps. Swipe the screens of all apps upwards to close them.
Then go into settings and turn on airplane mode.
When you’ve done that go to settings, general, reset and choose reset network settings (you will need to re-enter your wifi passwords!)
Once your phone has reset go to settings, privacy, location services, turn it off then on again.
Then go settings > privacy > location services > system services, setting time zone OFF.
Some devices may have apps installed that disable GPS services or terminate backgrounded apps in an attempt to reduce battery usage and improve system performance. Examples of apps in this category include “Advanced Task Killer” and “Juice Defender.” Please disable or adjust the settings of these apps to allow QPaws to receive GPS information during long periods of background operation.
Try using the QPaws app to record for 10 minutes, letting it search for signals with a wide-open view of the sky, and keeping it completely immobile.
If this does not produce useful location estimates, determine if GPS works in other apps. It’s best to use another fitness tracker app and not a navigation app like Google Maps, Waze, or Apple Maps. Navigation apps use cell towers to snap your position to known roads and trails which can give the illusion that your GPS is working perfectly. QPaws and many other fitness apps do not do this and just use GPS to position you. Because of this, you may notice QPaws is having a hard time locating you but other navigation apps aren’t.
The GPS system includes the chip in your device as well as the satellites above the Earth. So even if your device is in the same place and the same setting as before, it may behave differently from one day to the next. Typically, the device needs to receive signals from about 5 satellites to get an accurate estimate of its position. With the changing position of the satellites, changing weather patterns, and the changing nature of the Earth’s outer atmosphere, there are enough parts of the GPS system outside of your direct control and observation that it is difficult to make conclusions about what specifically is causing inconsistent performance. We recommend you try all the suggestions listed above thoroughly before making a judgment about the best ways to work with your device’s GPS.