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10.2. Device GPS recommended settings

When you press the Compass/GPS icon on the map screen the ViewRanger app asks the location services on the device to supply it with the current GPS location.  ViewRanger only shows an accurate position, other software may act differently.  GPS has an accuracy of 5 - 10 meters.

GPS types

There are two types of GPS on mobile devices;

Most mobile device specifications will list only A-GPS.  This is because the device will try to use A-GPS then revert to "normal" GPS.
A-GPS requires a mobile data connection to work.  GPS does not.
A-GPS assists the GPS service on the mobile device to aquire a quick GPS fix because, instead of taking time searching for the satellites, it asks the server where they are and then can lock onto them quickly.
If no data connection is available, it reverts to GPS, but takes longer to get a fix.
We highly recommend using A-GPS.

Tip:  If you know you are going to a remote location with no mobile data connection, lock to GPS prior to leaving.   You may find it caches the location of the satellites and is quicker to get a fix a little later on.

Recommending settings

To get the best of of the GPS receiver on the device please follow this advise;

In the ViewRanger app use the Menu tab (in green bar), Settings, GPS and make sure it is set to 'Continuous'.

In the device settigs, location we recommend you choose mode 'High accuracy', or possibly 'Gps-only' or 'Device-only' Do not use the power saving option there, as it will stop ViewRanger recording a track as it is not accurate.

On older Android devices (pre- Android v4.4. KitKat) in Location Services, ensure both "Use wireless networks" and "Use GPS satellites" are ticked.

Connecting to GPS

In the ViewRanger app press the GPS icon in the centre of the row of icons at the bottom of the map screen.
Remain stationary, with a clear 360 degree view of the sky, until the circle indication your position turns from grey to red.  Red means the app has an accurate fix.

Troubleshooting

GPS info - note highlighted items

First and foremost - restart the device! 

If you have having problems with GPS going to sleep when the screen is off then turn off Android device Settings > Power saving, Power saving modes.  Or Settings > Battery, Battery saver and Battery optimisation.

Then in the ViewRanger app press the Compass/GPS icon on the map screen.  In the Android notification bar, at the top of the screen, look for the location icon.  It will flash while trying to establish a GPS fix then remain solid when it has a fix.  If you are having problems getting an accurate GPS fix try installing a free "GPS info" type app from the app store.  This will give you more information on what is happing with the location services on the device.  You are looking for a HDOP value dropping down to a value of around 2 or below before an accurate fix.

Metal objects - like keys in your pocket, can interfere with GPS.

Huawei phones specific instructions (supplied to us by Huawei support):

Update to the latest Android firmware to 8.1.0.110 or above but it should be noted availability of the update from Huawei is patchy.

Android 8 and above Huawei devices:
In order to allow the apps to run in background, you have to follow the below steps in the Phone manager app:
- Phone manager app > Mobile data > Data saver: Off
- Phone manager app > Mobile data > Networked apps > Click on the arrow right to Networked app and select Advanced network settings > Activate all Background data
- Phone manager app > Battery > Settings (top right corner) > Keep Wi-Fi on during sleep: Always and activate Keep mobile data on during sleep
- Phone manager app > Battery >Launch > Manage maually all
- Recent app > Tick on the padlock of each app you want to keep running.

Android 7 and below Huawei devices:
Android Settings > Power saving, Power Plan set to Normal. Then tap Other, Protected apps, tick ViewRanger to be protected.


Knowledge Tags
GPS  / 

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