Android
Unpair a Bluetooth Device auf Android
A Bluetooth pairing stays saved on your phone even after you stop using the accessory. That stored entry can slow down scanning for new devices or cause your phone to try reconnecting to something that is turned off or out of range.
Removing the pairing deletes the saved connection key. The next time you want to use that speaker, headset, or car system, you have to pair it again from scratch, including any confirmation codes.
To forget a device, go to Tap on Settings ➔ Tap on Connected devices ➔ Open the Device settings ➔ Tap on Forget ➔ Tap on Forget device.
This works the same way whether the device is currently connected or just listed as previously paired. If the accessory is nearby and powered on when you remove it, it usually disconnects immediately before the entry disappears from the list.
When to skip this
If you only want to stop using a device temporarily, turning off its Bluetooth toggle or disconnecting it is enough. Forgetting the pairing is the right move when you are getting rid of the accessory, troubleshooting a connection problem, or need to re-pair it under a different account or phone.