Question

What are the limitation of mobile computing?

Answer 1

Range and Bandwidth: In general direct cable connection is faster than mobile internet  conection. 2G, 3G, 4G networks are fast but these networks are usually available within range of  cell phone towers. The main problem with wireless networks is that it works within limited  range.
Security standards: When working mobile, user will use virtual private network (VPN). VPN  should be carefully used. One can easily attack the VPN through a huge number of networks  interconnected through the line.
Power consumption: if a power supply fails or portable generator is not available then mobile  devices are relying on battery power. These batteries are more expensive.
Transmission interferences: The geographical area is not same everywhere. So the terrain can  interfere with signal reception. The range from the nearest signal point may also interfere with  signal reception. Signals in tunnels, some buildings, and rural areas are often poor.
Health problem due to Cell Phone: Mobile phone users may use phone while driving so it may  cause accident. Cell phones may interfere with sensitive medical devices.