What is the difference between a smartphone and a PDA?
A smartphone is usually a mobile phone that is integrated with an operating system which is able to manage other software, installs and runs applications, as well as operate call functions simultaneously. Both smartphones and PDAs share similar functions and are often difficult to distinguish one from the other. Probably the most noticeable difference would be their appearance as smartphones usually retain the mobile phone looks whereas PDAs are often constructed with bigger screens and a QWERTY keyboard.