iPhone OS 4 was previewed a while ago, and one of the features we can expect is the usage of a Bluetooth Keyboard for typing on the iPhone. Personally, after using my iPad and then switching back to my phone, I feel like I have to squint to read web pages. Regardless, for those who need to type on an iPhone, the option is there for you to connect your Bluetooth keyboard when iPhone OS 4 is released this summer.
Here’s a video from 9to5Mac showing how a Bluetooth keyboard works with the iPhone:
Not sure how practical this would be, but like I said if you absolutely need to type on the iPhone this will make your life a whole lot easier.