Device Guides
Apple iPhone 4S
Change device
iOS is the operating system software installed on your iPhone. To find out which version you have: Tap Settings, Tap General, Tap About, and view the version number.

Buy now
Search in Apple iPhone 4S
A Bluetooth device can't connect to my mobile phone
This troubleshooting guide will take you through a number of possible causes
to help you find a solution to your problem.
Turn on Bluetooth. Detailed instructions.
Step 1 of 5
1. Tap Settings.
Step 2 of 5
2. Tap General.
Step 3 of 5
3. Tap Bluetooth.
Step 4 of 5
4. Tap the indicator next to Bluetooth.Depending on the current setting, the function is turned on or off.
Step 5 of 5
5. Tap the Home key to return to standby mode.
Possible cause 1:
Bluetooth isn't turned on on your mobile phone
Solution:
Turn on Bluetooth. Detailed instructions.
1. Find "Bluetooth"
Tap Settings.
Tap General.
Tap Bluetooth.
2. Turn Bluetooth on or off
Tap the indicator next to Bluetooth.
Depending on the current setting, the function is turned on or off.
Depending on the current setting, the function is turned on or off.
3. Exit
Tap the Home key to return to standby mode.