Recording high quality tracks with an Android smartphone is possible, but there are many Android settings that cause issues.
Known issues are:
* tracks show large jumps
* tracks show large gaps
* tracks end prematurely
All are related to your systems settings of Android:
Location accuracy
Do not use the 'intelligent' and 'optimisation' functions. They work in the city, but in the bush they actually result in much lower accuracies:
- Settings / Location / Wi-Fi and Bluetooth scanning: turn both OFF
- Settings / Location / Advanced / Google Location Accuracy: turn OFF
- Some android versions the menu looks a bit different then you should select Location / Use GPS only
Location sharing
This setting needs to be Share location at all times (not only when using the app, because the track will be ended the moment the phone switches to sleep mode)
Battery
Settings / apps / Cluey / Battery: Select Allow background activity.
In newer Android versions, select the Unrestricted option.
Battery optimisation: Not optimised
Check the Power Saver (in most Androids you find it in the Settings menu under Battery or Power Manager).
It should be turned OFF for Cluey.
Duraspeed
Duraspeed is all about battery and performance management by killing apps in the background.
To prevent this from happening, you can whitelist the Cluey app, or disable the Duraspeed function all together.
Lock-in recent app
Search in your Settings for the Lock-in function.
Select the Cluey app and place it on the whitelist with the lock closed.
Auto-clean-up
Open the System Manager / App Management/ Auto cleanup
Select the Cluey app and enable the switch to prevent cleanup
Are your working under a thick tree cover?
Consider connecting your phone to a Garmin device. It has a much better GPS-antenna. When connected (via bluetooth) the tracks of your phone will be upgraded to Garmin quality.