Differences in PDA phone and Smartphone?

Phone PDA (Personal Digital Assistant Phone) is the development of the PDA can also be used as a phone. PDA is made as a mini computer that functions as a digital organizer, and easy to carry everywhere. However, in the further development, the function added in the PDA phone, so known by the name of PDA phone.

On the development of the smartphone is a mobile phone which is then added features and other facilities so that a smart phone and called a smartphone. If compared, almost no differences between the PDA phone and smartphone.