Connect to a Bluetooth device
Once you've paired with a Bluetooth device, you can connect to it manually; for example, to switch devices or to reconnect after it is back in range.
1Under Settings > Wireless & networks, make sure Bluetooth is turned on.
2In the list of devices, touch a paired but unconnected device.
When the phone and the device are connected, the device is displayed as connected in the list.
Configure or unpair a Bluetooth device
Some Bluetooth devices have multiple profiles. Profiles can include the ability to transmit your conversations, play music in stereo, or transfer files or other data. You can select which profiles you want to use with your phone. You can also change the name of the Bluetooth device as it appears on your phone.
1Under Settings > Wireless & networks, make sure Bluetooth is turned on.
2In the Bluetooth settings, touch the Quick Settings icon 
beside the connected Bluetooth device you want to configure.
A screen opens that allows you to change the device's name, unpair it, or select profiles. touch the Back button when you're finished.
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