If you have a lot of Bluetooth devices in your life, it’s probable that you’ve had it connect to your iPhone, iPad, or iPod touch when you didn’t want it to. If you get sick of scrolling through a long list of other people’s computers in your office, for example, you can just set up your iOS device to forget the ones you don’t want to deal with. In addition, if you’ve “forgotten” a device to get it out of your list, then suddenly need to re-find it again, we can help you with that, too.
First up, tap on the Settings app and then the Bluetooth pane. Find the device you want to ignore, and tap on the blue circle with the right-facing arrow in it. Now tap the “Forget This Device” button, and your iOS device will take it out of the list of previously connected Bluetooth devices.
If you want to connect your iPhone or iPad with the device again, you’ll need to set the Bluetooth device to pairing mode in order to make that happen. The joy of this tip, though, is that if it’s a device you never want to see in your list again, just make sure the Bluetooth device is never put into pairing mode when you’re looking in your Bluetooth settings. You’ll never have to see it again.
Some folks on the Apple support forums advocate powering your iPhone or iPad down, and then restarting it to see your list of previously paired devices. I personally wasn’t able to recreate this, but your mileage may vary.
Via: Apple Support