OnePlus - Interrupted Trainings

On some devices, you may need to edit some settings to avoid trainings getting interrupted. See below for a guide on how to allow the app to keep running in the background during your whole training

Battery optimization

• Turn off System Settings > Apps > Gear Icon > Special Access > Battery Optimization.
  WARNING: Recently OnePlus phones started reverting this setting randomly for random apps. So if you set it to be not optimized, the next day it may be back to optimized.
  To avoid the system to automatically revert the not optimized setting, you must also lock the app into the ‘Recent App’ list. (solution described here)
  Start the app you want to protect. Go to Recent Apps (App switcher). Toggle the Lock button on the upper right corner of the app.
  This will prevent the app from being killed in the background and the Battery optimisation setting from being reverted.
  This is however not 100%. You may have to check system settings every once in a while. See a bug report filed to OnePlus.
  
  
• Turn off System settings > Battery > Battery optimization, switch to ‘All apps’ in top right menu > Your app > Don’t optimize
  NOTE: Some of our users indicated that you need to disable Doze mode in Developer options in 1+3 and earlier.

App Auto-Launch

App Auto-Launch (on some OnePlus phones) essentially prevents apps from working in the background. Please disable it for your app.

Enhanced / Advanced optimization

• OnePlus 6 and further:
  System settings > Battery > Battery optimization > (three dots) > Advanced optimization.
  You’ll see two options there. Both are enabled by default:
  1. Deep optimization
     This is the main app killer. If you need any apps to run in the background, disable them.
  2. Sleep standby optimization
     OnePlus tries to learn when you are usually asleep, and in those times it will then disable the phone’s network connections. This setting will prevent push notifications from being delivered.
  
  
• OnePlus below 6:
  Turn off System settings > Battery > Battery optimization > (three dots) > Enhanced optimization.
  NOTE: This should help with the problem where you lose Bluetooth connection to your smartwatch/fitness tracker (e.g. for sleep tracking).

Recent apps clearing behavior

Normally when you swipe an app away, it won’t close. Android handles that well on its own. On OnePlus this may however work in a different way. Recent app clear behavior manager might be set up in a way that swiping the app to close will kill it.