Clear out the Bluetooth cache on Android 11 by simply going through the below-given steps:
Step 1: Open your phone’s Settings app
Step 2: Choose Application Manager.
Step 3: Tap on Menu (3 dots) at the top of the right corner & then choose All System Apps.
Step 4: Now, just scroll & make a tap on a Bluetooth app.
Step 5: Stop your phone’s Bluetooth app by clicking on Force Stop option.
Step 6: Touch on Clear Cache.