iPhone 12 Pro Bluetooth disconnect

Hi FPajak,

Thanks for posting in Apple Communities, we’d love to help provide some assistance with you Bluetooth connection. When you have connection issues with Bluetooth that happen throughout several devices, a great starting point will be some helpful troubleshooting found in If you can't connect a Bluetooth accessory to your iPhone, iPad, or iPod touch - Apple Support. If you continue to have issues after these steps, it may lead to the next steps of having the device further inspected. We hope this helps.

Thanks for using Apple Support Communities.