# As well as having smaller displays, mobile devices have a wide variety of display sizes.
# Current mobile devices with color displays support either 4,096 (12-bit) or 65,536 (16-bit) colors while some PCs are able to display over 16 million colors (32-bit).
# Text inputting is slower in mobile devices than it is with a full PC keyboard.
# Mobile devices usually have no mouse for activating an object, which limits the possible user interface components and slows down object activation.
# Some mobile devices and/or browser view modes support only vertical scrolling. Soft keys are used for activating commands in mobile devices; the number and purpose of soft keys vary between devices from different manufacturers.
# Connection establishment and data transfer between the terminal and the server is slower than in a fixed domain.
# The amount of data that can be stored in a mobile device is limited.
# The context of use cannot be predicted as easily as with, for example, an office PC application.
# Mobile users may have to pay for each piece of transferred data.