Troubleshooting music stopping

[Hi-Fi Cast Developer]

By far the most common cause of music stopping unexpectedly (especially when the screen goes off) is the battery optimization features of the phone/tablet stopping Hi-Fi Cast from running in the background.

See: https://dontkillmyapp.com

If you are finding that playback stops unexpectedly after a period of time please try the following:

• Disable any Battery Saver (or Power Saver) function that you may have enabled on your phone/tablet. Hi-Fi Cast needs to communicate regularly with your playback device and battery savers can interfere with this. For example, the battery saver on Xaiomi devices will cause playback to stop after 4-5 minutes after the screen goes off. On some Huawei devices Hi-Fi Cast will need to be set as a 'protected app' (see below for instructions) and on some Samsung devices Hi-Fi Cast will need to be added to the list of unmonitored apps. See below for more details.
  
• For Android versions 6.0 and above try disabling Android 'Doze Mode' for the Hi-Fi Cast app
• Open the settings app on your phone
• Tap battery
• Tap the menu button and choose "Battery optimization"
• Tap the dropdown menu at the top of the screen and select "All Apps"
• Scroll down to "Hi-Fi Cast" - tap it and select "Don't Optimize"

To remove battery optimization for the Hi-Fi Cast app on MIUI powered phones (eg Xaiomi):

• Settings -> battery & performance -> power -> app battery saver -> Hi-Fi Cast -> no restrictions.
  

Huawei/Honor devices:

• See here
  

On some Samsung devices Hi-Fi Cast needs to be added to the list of unmonitored apps:

• Go to Settings - Device Maintenance - Battery - App Power Monitor - Unmonitored Apps (towards bottom of page) - Add Apps

On some Samsung devices Hi-Fi Cast needs to be removed from the to the list of Sleeping Apps AND have the Allow background activity setting enabled:

See: https://www.samsung.com/us/support/troubleshooting/TSG01200668/

More links related to battery optimization (incorrectly) stopping apps from running in the background:

https://dontkillmyapp.com/

Other things to try

• Keep your phone connected to the local network during playback. Hi-Fi Cast needs to remain connected to your local network so it can control track advance when a song ends. Even disconnecting from the local network for short periods of time can cause problems because Hi-Fi Cast can lose the connection to your playback device (an active connection is indicated by a solid orange 'cast' icon at the bottom of the 'Now Playing' or 'Music Library' screens).
• Task manager or Process killer apps can interfere with Hi-Fi Cast. If you have installed this type of app, add Hi-Fi Cast to the 'white list' so that the Hi-Fi Cast process is not killed during music playback.
• Close open apps that you are not using by swiping them from the Android 'recent apps' screen.
• Try rebooting your phone/tablet, router and playback device (yes, all three!)

If the music stops at the end of each track and you are playing to a UPnP/DLNA renderer:

• Turn off the 'Renderer Eventing' option via Settings > UPnP/DLNA > Renderer specific settings
  
• Turn of the 'Gapless Playback' option via Settings > UPnP/DLNA > Renderer specific settings

[Hi-Fi Cast Developer]

For Samsung S20, the following might help:

In the Android Settings app, go into the app's configuration and under battery configuration mark its battery usage as unrestricted.