What should I do if I cannot connect my iPhone 4 or iPhone 4S Bluetooth headset?

1. if our Apple 4s does not find our Bluetooth headset, we can try to set the Bluetooth function in the Apple mobile phone or test the related switch of the Bluetooth headset, then try to search for a Bluetooth device.

2. another possibility is that the Bluetooth headset uses a battery, so that if your Bluetooth headset has been useless for a long time, it will automatically shut down, so that it becomes a power saving effect, if this problem occurs when you connect a Bluetooth headset to your iPhone, check whether the Bluetooth headset is in the active state. It is possible that the power of the Bluetooth headset is insufficient and the device has been automatically shut down. If there is no power, charge the Bluetooth headset first.

3. If we still cannot, we can try to shut down the Bluetooth headset and then turn it on.

4. if none of the above methods works, we can try to shut down the iphone and then restart it. The shutdown method is to long press the power button of the iphone, after a shutdown entry is displayed on the screen of the Apple mobile phone, we only need to slide and shut down.

5. if none of the above methods have been tested, we can try to use the iPhone to connect to another Bluetooth device or use another Bluetooth headset to connect to our Apple, if possible, we can find out the cause for further troubleshooting.