having problems with battery doc app from Kingsoft, keeps giving a sound alert even after deleting the app hence interrupting any music playing

Hello there, Paul.

It sounds like you are experience issues with an app downloaded to your iPhone. The following Knowledge Base article offers up some great instruction for resolving the issue:

If an app you installed unexpectedly quits, stops responding, or won’t open - Apple Support

In your case, since you have tried removing the application and are seeing behavior from the application, you may need to review the following:

Contact the app developer

If you see this issue again, contact the app developer for help:

1. Find the app in the App Store.
2. Tap the app, then tap Reviews.
3. Underneath App Store Customer Reviews, tap App Support.
   

Thanks for reaching out to Apple Support Communities.

Cheers.