Bluetooth problems are among the most common issues iPhone users run into after installing a major iOS update. Whether your AirPods won’t connect, your car won’t pair, or your Apple Watch keeps disconnecting, the issue isn’t always with the accessory itself. In many cases, it’s caused by outdated pairing data, temporary software glitches, or compatibility issues that can be fixed in a few minutes.
This guide covers the most common Bluetooth problems on iOS 27 and the best ways to fix them before contacting Apple Support.
Common Bluetooth Problems on iOS 27
The fixes below can help if your iPhone is experiencing any of these issues:
- Bluetooth won’t turn on
- AirPods won’t connect
- Bluetooth keeps disconnecting
- Your iPhone can’t find nearby Bluetooth devices
- Pairing fails or gets stuck
- Bluetooth audio keeps cutting out
- Your car won’t connect over Bluetooth
- Apple Watch won’t pair or stay connected
- Accessories show as connected but don’t work
- Bluetooth problems started after updating to iOS 27
1. Restart Your iPhone
Restarting your iPhone clears temporary software glitches that may interfere with Bluetooth after installing iOS 27.
- Press and hold the Side button and either Volume button.
- Drag the power slider to turn off your iPhone.
- Wait about 30 seconds.
- Turn your iPhone back on.
- Try reconnecting your Bluetooth accessory.
2. Turn Bluetooth Off and Back On
Refreshing Bluetooth can resolve temporary connection problems.
- Open Settings > Bluetooth.
- Turn Bluetooth off.
- Wait about 10 seconds.
- Turn Bluetooth back on.
- Try connecting your accessory again.
Although you can also use Control Center, turning Bluetooth off from Settings ensures the wireless radio is fully reset.
3. Restart the Bluetooth Accessory
Sometimes the problem is with the accessory rather than your iPhone.
Restart your AirPods, headphones, speaker, keyboard, mouse, fitness tracker, or smartwatch according to the manufacturer’s instructions. If you’re connecting to your car, restarting the infotainment system can also help.
Once the accessory has restarted, try pairing it again.
4. Forget the Device and Pair It Again
Bluetooth pairing information can occasionally become corrupted after a software update.
To remove a paired device:
- Open Settings > Bluetooth
- Tap the ⓘ next to the accessory
- Tap Forget This Device
- Put the accessory back into pairing mode
- Pair it with your iPhone again
This is one of the most effective fixes for accessories that refuse to reconnect automatically.
5. Make Sure the Accessory Has Enough Battery
Low battery levels can cause Bluetooth accessories to disconnect unexpectedly or refuse to pair altogether.
Charge your AirPods, headphones, speaker, keyboard, mouse, or other accessory before continuing with additional troubleshooting.
If the device only disconnects when the battery is nearly empty, iOS 27 may not be the cause.
6. Move Closer and Reduce Wireless Interference
Bluetooth works best over short distances.
If you’re several feet away from your accessory, or there are walls, metal objects, or other wireless devices between them, the signal can become unstable.
Try moving your iPhone closer to the accessory and temporarily turn off nearby Bluetooth devices that aren’t being used to reduce interference.
7. Disconnect the Accessory From Other Devices
Many Bluetooth accessories automatically reconnect to the last phone, tablet, or computer they were paired with.
If your headphones are still connected to your Mac, iPad, or another phone, they may not appear available on your iPhone.
Disconnect the accessory from other devices before attempting to pair it with your iPhone again.
8. Check for Firmware Updates
Many Bluetooth accessories receive firmware updates that improve compatibility with newer versions of iOS.
AirPods install firmware updates automatically while they’re charging and connected to your iPhone.
If you’re using a third-party accessory, open the manufacturer’s companion app to check whether a firmware update is available.
9. Install the Latest Version of iOS 27
Apple frequently addresses Bluetooth bugs through follow-up software updates.
- Open Settings.
- Tap General.
- Select Software Update.
- Install any available iOS 27 update.
- Restart your iPhone if prompted.
Even minor updates often include fixes for connectivity and accessory compatibility.
10. Reset Network Settings
If Bluetooth issues continue, resetting your network settings can help.
- Open Settings.
- Tap General.
- Select Transfer or Reset iPhone.
- Tap Reset.
- Choose Reset Network Settings.
- Enter your passcode if prompted.
- Wait for your iPhone to restart.
- Reconnect your Bluetooth accessories.
Keep in mind that this also removes:
- Saved Wi-Fi networks
- Wi-Fi passwords
- Bluetooth pairings
- VPN configurations
11. Reset All Settings
If nothing else has worked, resetting all settings may resolve deeper software configuration issues without deleting your personal data.
- Open Settings.
- Tap General.
- Select Transfer or Reset iPhone.
- Tap Reset.
- Choose Reset All Settings.
This resets system settings such as Wi-Fi, Bluetooth, privacy, keyboard, accessibility, and wallpaper preferences, but it does not erase your apps, photos, messages, or other personal files.
Because you’ll need to reconfigure many of your settings afterward, it’s best to leave this step until you’ve tried the other fixes.
What If Only One Bluetooth Device Won’t Connect?
If every other Bluetooth accessory works normally except one, the problem is likely with that device rather than your iPhone.
Try pairing the accessory with another phone or tablet. If it still won’t connect, check for firmware updates or contact the manufacturer.
If it works with another device but not your iPhone, remove it from your Bluetooth devices list and pair it again.
How to Tell if It’s an iOS 27 Bug
Sometimes the issue isn’t caused by your settings at all.
It may be an iOS 27 bug if:
- Bluetooth problems started immediately after updating.
- Multiple accessories suddenly stopped working.
- Restarting temporarily fixes the problem before it returns.
- Other users are reporting the same issue after updating.
If that’s the case, keep your iPhone updated. Apple regularly releases bug fixes in subsequent iOS 27 updates that address Bluetooth and connectivity issues.
When to Contact Apple
If Bluetooth won’t turn on, the Bluetooth toggle is greyed out, or your iPhone can’t detect any nearby Bluetooth devices after trying every fix above, the issue could be hardware-related.
Contact Apple Support or visit an Apple Store to have your iPhone inspected. Apple can run diagnostics to determine whether the Bluetooth hardware is functioning properly.
