Reconnect a Bluetooth accessory to an iPhone or iPad
Check discovery mode, proximity, accessory power, app permission, competing pairings, compatibility, and the correct Apple escalation branch.
Direct answer
The shortest reliable path.
Place the accessory near the iPhone or iPad, put an unpaired accessory in discovery mode, restart the accessory, and confirm it is charged or powered. If it was connected before, unpair it, return it to discovery mode, and pair again. If it still pairs with another device, unpair it there before retrying. Check Bluetooth permission for any companion app. Contact Apple if Bluetooth is grayed out or no accessories can connect; ask the accessory maker to confirm compatibility when only that product fails.
System view
Check the whole path.
- 01Powered Bluetooth accessory
- 02Discovery mode and proximity
- 03iPhone or iPad Bluetooth radio
- 04Stored pairing and competing hosts
- 05Companion app permission
Scope before steps.
Bluetooth keyboards, speakers, controllers, wearables, vehicle accessories, and similar products that will not pair or reconnect to an iPhone or iPad.
AirPods-specific setup, Apple Watch pairing, Wi-Fi accessories, Bluetooth audio quality after connection, car manufacturer procedures, or unsupported accessory firmware.
Procedure
Do this in order.
- 01
Prove power, discovery, and proximity
Move the accessory close to the iPhone or iPad, turn the accessory off and back on, and enter its manufacturer-documented discovery mode.
- 02
Check the companion app permission
When the product uses an app, open Settings > Privacy & Security > Bluetooth and make sure that app is allowed to use Bluetooth.
- 03
Replace a stale pairing
If the accessory was previously connected to this device, unpair it, put it back in discovery mode, and pair it again from Bluetooth settings.
- 04
Remove competing hosts and check compatibility
If the accessory works with another device, unpair it from that device and retry the iPhone or iPad. Ask the accessory manufacturer to confirm current iOS or iPadOS compatibility when only this product still fails.
Diagnostic matrix
Read the result, not the guess.
| What you see | Check next | What it means |
|---|---|---|
| The accessory appears only after discovery mode is entered | Complete pairing before the accessory’s discovery window closes. | The iPhone or iPad can scan; the accessory was not previously advertising. |
| The accessory connects after being removed from another device | Keep it disconnected from the competing host when using it with the iPhone or iPad. | The accessory was still associated with or connected to another host. |
| Bluetooth is grayed out or no accessory can connect | Record the iOS or iPadOS version and contact Apple Support. | Apple identifies this as a device-wide escalation condition, not a single-accessory pairing problem. |
Stop conditions
Know when not to keep changing things.
- Do not repeatedly factory-reset an accessory before checking its own manual and competing pairings.
- Stop using a damaged, swollen, wet, or unusually hot battery-powered accessory.
- Contact Apple when Bluetooth is unavailable or every known-compatible accessory fails; contact the accessory manufacturer when only its product fails.