The Bluetooth technology on your iPhone allows you to wirelessly connect with other Bluetooth-enabled devices near it, allowing you to share and send data between the phone and the device. You can view Bluetooth devices that you can connect to in the "Bluetooth" section of your iPhone's settings. However, sometimes a Bluetooth-enabled device may not show up and you need to troubleshoot to find out why your iPhone can not find the device.
Check for Power and Pairing Mode
Check that the Bluetooth device that you are trying to connect to has sufficient power and is turned on. Check that pairing mode on the device is on.
Make sure that your iPhone's battery is not dead and the iPhone is on. Open the Bluetooth settings by tapping on the "Settings" icon on your iPhone home screen and tapping open the "Bluetooth" section. Ensure that the Bluetooth setting is set to "On" in order to search for and pair with Bluetooth devices.
Restarting the Bluetooth device may reset it or allow it to be recognized by the iPhone if there is an issue with finding the device. If this does not work, try restarting the iPhone, as this may clear up the issue.
Resetting Bluetooth and Network Settings
Simply turning the Bluetooth feature off and on again on your iPhone may allow it to pick up the device's signal. You can do this by tapping the "Settings" icon on your iPhone home screen and tapping the "Bluetooth" section in the Settings. Tap the on/off slider to switch the Bluetooth off, then tap it again to turn it back on. If this does not resolve the issue, you can also reset all of your iPhone's network settings. To do this, tap "Settings" and select the "General" section. Tap on the "Reset" section and tap the "Reset Network Settings button" to reset all of your network settings including Wi-Fi networks and VPN and APN settings as well as Bluetooth.
On the Bluetooth device, if there is a reset button or option, use it to reset the device, then set it to pairing mode and search for it again. If there is no reset option, switch it out of pairing mode and then turn pairing mode back on and search for the device again.
Checking the Range
Connecting to a Bluetooth device can only be done when the device is within 33 feet of your iPhone. If the iPhone is not finding the device, move closer to the device to ensure that you are within this range.
Updating your iPhone to the latest version of iOS may resolve issues with finding Bluetooth devices. If the Bluetooth device itself has an operating system or firmware as well, try updating it to the latest version.
Checking for Interference
The Bluetooth wireless signal may not be found due to interference. While the device may be in range, electrical equipment may disrupt the signal or physical obstacles can block the signal. Take your iPhone and the Bluetooth device away from any electrical interference, place them so that there is nothing in between them, and remove any case or protection from your iPhone that could be blocking the signal.
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