Smartphones are the cell phones with an operating system. The possibilities for an operating system are Symbian, UIQ Symbian, windows mobile and linux. The major advantage of a smartphone is the flexibility to customize your phone. This also opens door to other third party applications to be compatible with your smartphone. Nokia has chosen Symbian Operating System for its series of smartphones. The series is also called series 60 smartphones.

Initially, Nokia series 60 smartphones lack the processing speed and with time the OS gets slower and slower. This drawback has been covered in the new smartphones with increased processor speeds and latest versions of symbian os.