how to keep music playing on iphone when locked

This can be done by opening Settings. app, going to General, then scrolling down to "Auto-Lock". Set this to "Never". It is possible use the speakers on iPhone to play even when the device is locked.
...
This is possible by:

1. Opening Music. app.
2. Select song/album/playlist.
3. Lock the device. The music will continue to play.

1. Why won't my music play when I lock my phone?
2. Why does my iPhone stop streaming when the screen locks?
3. Why does my audio stop when my iPhone locks?
4. How do I play music while my phone is locked?
5. How do I keep my music playing when my screen is off?
6. How do I stop iHeartRadio playing when iPhone is locked?
7. Why does my music keep playing on my iPhone?
8. How do I turn off auto lock on my iPhone?
9. How do I stop Spotify playing when my phone is locked?
10. Why does my music stop automatically?

Why won't my music play when I lock my phone?

As soon as phone locks, app will become a background process, so will stop using the internet, thus stopping the playback. This can also happen if your phone has a data saver mode enabled.

Why does my iPhone stop streaming when the screen locks?

If your iPhone screen locks automatically, your stream may be interrupted. This is particularly noticeable when you are using your device to cast the stream to a TV screen via Apple TV. To stop this happening please follow these instructions: Go to SETTINGS on your phone and > DISPLAY & BRIGHTNESS > AUTO-LOCK > Never.

Why does my audio stop when my iPhone locks?

If you are on a website playing audio or video, but your screen locks/goes to sleep, it is normal for the audio and video to stop playing at that time. You would want to adjust the Auto-Lock setting under Settings > Display & Brightness > Auto-Lock, if you wish to keep your iPhone from going to sleep.

How do I play music while my phone is locked?

Play Through Google Chrome Browser On Android

Simply pull up the Chrome Browser – which should come preloaded on your Android phone – and watch the video in question. If you lock your phone, the audio should continue playing.

How do I keep my music playing when my screen is off?

Audio stops playing on Galaxy mobile devices or accessories

1. Adjust the Battery settings. Open Settings, and then tap Apps. ...
2. Remove the app from Sleeping apps. Alternatively, you can open Settings, and then search for and select Sleeping apps. ...
3. Turn off Power saving mode. ...
4. Adjust the Data saver settings. ...
5. Adjust playback options.

How do I stop iHeartRadio playing when iPhone is locked?

If that doesn't work or is already off, please try the following steps:

1. Go to phone settings.
2. Go to Apps.
3. Select iHeartRadio.
4. Select Optimize Battery Usage.
5. Search for iHeartRadio and disable.

Why does my music keep playing on my iPhone?

To fix this, just unlock your smartphone and keep it still. You can also go to the music app and manually stop it from playing. If you want to avoid Apple Music starts playing by itself issue, then go to your iPhone's Settings > Music and toggle off the “Shake to Shuffle” feature.

How do I turn off auto lock on my iPhone?

How to turn off Auto-Lock on your iPhone and iPad

1. Launch Settings from the Home screen.
2. Tap on Display & Brightness.
3. Tap on Auto Lock.
4. Tap on the Never option.

How do I stop Spotify playing when my phone is locked?

Settings > Device Care > Battery > Spotify > Put App To Sleep is OFF. That should work. Every time you optimize the device, this turns back on so you may have to do this every time your phone gets "optimizied".

Why does my music stop automatically?

Low RAM on your phone. So, the background play is stopped automatically to create required space. Some battery optimizer is running, which is working hard to save your battery. Internal software issues of your phone, or the music player.