how do i send via bluetooth pictures taken by my iphone 4s to other celphones?

That's not a feature of the iPhone. You can email or MMS the pictures. Or, take a look at an app like Bump.

Unless you have a third party app, you cannot. iOS devices are only designed to use Bluetooth to connect to peripheral devices such as keyboard, mouse or your car.

Peizoandme wrote:

Unless you have a third party app, you cannot. iOS devices are only designed to use Bluetooth to connect to peripheral devices such as keyboard, mouse or your car.

iOS devices do not support bluetooth mice.