Among the most important features of iPhone OS 4.0, one that stands out is the support for Bluetooth keyboards. This has been a wish of the handset’s users for years now and it has finally come true: you will be able to type emails or blog posts on the go much faster, using an iPhone and a keyboard.

Apple sells such a keyboard, but there are also a couple of models that don’t belong to the Cupertino giant, but still they perform pretty neatly. Have fun writing novels on your handset, once the OS is out.

[via mobilecrunch]