Why bother to get a dedicated app to print from your iPhone when AirPrint is already included in the iOS? Because all printer types are not supported by the AirPrint feature, and even if yours is, sometimes all of the ducks refuse to line up in that proverbial row. If you have an AirPrint enabled printer and the printer is connected to the computer through what is known as Bluetooth, the technology that allows for wireless connection of many different types of devices, your request won’t print. That’s because your iPhone does not enjoy native Bluetooth support for printing. Worse yet, if the printer is attached via a USB cable, the most common connection of the day, well, that’s not supported either.