If music is playing in Spotify or Apple Music and is paused for any reason—whether by user action or due to another app taking audio focus—connecting to a Bluetooth device will often cause the music to resume automatically. This happens because the music app remains active in the background and interprets the Bluetooth connection as a “play” command.
To prevent this, you can force close the music app after pausing playback. Additionally, you may try disabling Live Activities by going to Settings > Face ID & Passcode > Live Activities.
Note: Live Activities are designed to keep certain app information updated in real time on the Lock Screen or Dynamic Island. In some cases, this constant background activity can send signals that inadvertently trigger audio playback when a new device connects. Disabling Live Activities for music apps can reduce the chances of playback starting on its own.

How to stop AirPods switching to Other Devices Automatically
- Make sure your AirPods or AirPods Pro are connected to your iPhone.
- Launch the Settings app.
- Tap Bluetooth.
- Tap the encircled info (i) button next to your AirPods in the list.
- Tap Connect to This iPhone.
- Select When Last Connected to This iPhone.
See the Pic below.
