Using Bluetooth, you can wirelessly connect your iPhone to headset, keyboard, car, printer, another iPhone/iPad/iPod device or other Bluetooth devices. However, sometimes iPhone won't connect to Bluetooth devices for either software problems or hardware problems on Bluetooth device. If you have the same problem, please don't worry, this article will help you fix iPhone cannot pair to Bluetooth with some solutions.
What to Do before Going Further:
1. Make sure you have enabled Bluetooth on both of iPhone and other Bluetooth device. If not, please swipe up from iPhone screen to open Control Center and find Bluetooth to turn it on, or go to "Settings" > "Bluetooth" to enable Bluetooth on your iPhone.
2. Make sure both devices are close to each other within working range.
3. Avoid being too close to the Wi-Fi router, which can cause Bluetooth interference.
4. Make sure your iPhone has not already paired with another device. If yes, please turn off Bluetooth on another device.
Method 1. Re-enable Bluetooth on iPhone
The simplest way to to turn off Bluetooth on iPhone and then turn it on again after a few seconds. There are 2 ways to reactivate Bluetooth on iDevice: 1) Swipe from the bottom of iPhone screen to open Control Center, tap Bluetooth icon to disable it, then tap it again to enable it again. 2) Go to "Settings" > "Bluetooth" on iPhone, switch Bluetooth off, and switch it on again.
Method 2. Soft/Hard Restart iPhone
Most of time, the little problems that iOS device encounters are temporary and can be easily fixed by iPhone reboot. To fix iPhone cannot connect to Bluetooth, you can try soft reboot at first, if it does not work, try the hard reboot.
· Soft Restart: Press and hold Power button to bring out "slide to power off" slider, then swipe to turn iPhone off. Then press the Power button again to turn on iPhone.
· Hard Restart: Press and hold the Home button (or Volume Down button for iPhone X/8/8 Plus/7/7 Plus) and Power button at the same time till iPhone screen goes completely black and let go. Then hold the Power button to start iPhone again.
Method 3. Update iPhone to the Latest iOS Version
Generally speaking, a new iOS version can fix bugs on iPhone/iPad/iPod and make improvements on iDevice. To fix Bluetooth connection problem, you can upgrade your iPhone to the newest iOS version. To do so, please go to "Settings" > "General" > "Software Update" and download and install the latest iOS software on you iPhone.
See Also: iPhone Won't Update? Here's How to Fix!
Method 4. Reset Network Settings on iPhone
Bluetooth can work without network, but it needs to network connection in some cases. To fix iPhone cannot connect to Bluetooth, you can reset network settings on your iPhone. However, please be noted that after resetting network settings on iPhone, you need to reconnect to Bluetooth device and Wi-Fi networks again with password. To do so, please go to "Settings" > "General" > "Reset" > "Reset Network Settings" and tap "Reset" option on pop up window to confirm your action.
Method 5. Restore iPhone with iTunes
To fix iPhone cannot pair or connect to Bluetooth, you can also restore your iPhone with iTunes. However, this will delete all current data on your iPhone, so please backup your iPhone before restoration in case of data lost.
To restore iPhone via iTunes, please launch the latest iTunes on your computer and connect your iPhone to computer with a USB cable. Then click iPhone icon and click "Summary" tab, and hit "Restore iPhone..." option on the right panel to start restoring process. After restoration, you can get back your iPhone data by restoring from iCloud backup or restoring from iTunes backup.