Tap the box next to the contacts you want to share.
Tap the All checkbox (upper-left) to select all.
Selected when a check mark is present.
Tap Share (at the bottom).
If presented with a 'Turn Bluetooth on...' screen, tap Turn on.
Select a device.
To appear in the Bluetooth devices list, the recipient's device must be discoverable.
If necessary, tap Scan (located at the bottom).
To complete the transfer, the recipient must accept the file.