Limitations in functionality of mobile devices: Mobile technologies are
still dogged by limitations such as limited battery life, unreliable network
connections, volatile access points, risk of data loss, portability, and location
discovery. Even in the developed world, until recently, wireless communica-tions were very limited with regards to functionality of devices and speed of
communications. Constraints such as screen size, memory, and storage capabilities as well as data transfer rates averaging 14.4 Kilo Bytes Per Second
(KBPS), limited the amount of data that could be both displayed and accessed.
These limitations are still one of the biggest barriers to the adoption of mobile
working in many countries.