Your device provides various options that help you conserve battery power.
• Optimize the device using the device care feature.
• When you are not using the device, turn off the screen by pressing the Power key.
• Activate power saving mode.
• Close unnecessary apps.
• Deactivate the Bluetooth feature when not in use.
• Deactivate auto-syncing of apps that need to be synced.
• Decrease the backlight time.
• Decrease the screen brightness.
Hi Sipper, Please clear the cache for your Bluetooth application and check if it resolved your issue. I suggest you to post your query as a new post.