Dear Onokings,
1. Just try to force restart your mobile. Restart your iPhone, iPad, or iPod touch - Apple Support
2. Try to find your Bluetooth device is visible to another device because you are pointing that it's spinning when you tap the Bluetooth icon from the control center.
3. If not, try to reset the mobile using settings general and reset. If you can't update or restore your iPhone, iPad, or iPod touch - Apple Support
4. Finally, try to contact apple support. Official Apple Support