Editing Mobile computing (section)

==Limitations==
* Expandability, [[Replaceability (technology)|replaceability]] and [[modularity]]: In contrast to the common traditional [[motherboard]]-based PC the [[System on a chip|SoC]] architecture in which they are embedded makes these features impossible.
* Lack of a [[BIOS]]: As most smart devices lack a proper [[BIOS]], their [[bootloading]] capabilities are limited as they can only boot into the single [[operative system]] with which it came, in contrast with the PC BIOS model.
* Range and bandwidth: Mobile Internet access is generally slower than direct cable connections, using technologies such as [[GPRS]] and [[EDGE (telecommunication)|EDGE]], and more recently [[HSDPA]], [[HSUPA]], [[3G]] and [[4G]] networks and also the proposed [[5G]] network. These networks are usually available within a range of commercial cell phone towers. High-speed network wireless LANs are inexpensive but have a very limited range.
* Security standards: When working mobile, one is dependent on public networks, requiring careful use of [[virtual private network|VPN]]. Security is a major concern while concerning the mobile computing standards on the fleet. One can easily attack the VPN through a huge number of networks interconnected through the line.
* Power consumption: When a power outlet or portable generator is not available, mobile computers must rely entirely on battery power. Combined with the compact size of many mobile devices, this often means unusually expensive batteries must be used to obtain the necessary battery life.
* Transmission interferences: Weather, terrain, and the range from the nearest signal point can all interfere with signal reception. Reception in tunnels, some buildings, and rural areas is often poor.
* Potential health hazards: People who use mobile devices while driving are often distracted from driving and are thus assumed more likely to be involved in traffic accidents.<ref>{{cite web|url=http://www.distraction.gov/stats-and-facts/|title=U Drive. U Text. U Pay.|last=andrew.currin.ctr@dot.gov|date=8 September 2016|website=NHTSA|access-date=25 March 2018|archive-date=5 October 2011|archive-url=https://web.archive.org/web/20111005162804/http://www.distraction.gov/stats-and-facts/|url-status=live}}</ref> (While this may seem obvious, there is considerable discussion about whether banning mobile device use while driving reduces accidents.<ref>{{cite web|url=http://handsfreeinfo.com/study-handheld-cell-bans-have-no-effect|title=Hands Free Cell Phones No Safer, Insurance Study Claims|access-date=16 July 2015|archive-date=17 July 2015|archive-url=https://web.archive.org/web/20150717052047/http://handsfreeinfo.com/study-handheld-cell-bans-have-no-effect/|url-status=live}}</ref><ref>{{cite web|url=http://news.cnet.com/8301-30686_3-10444717-266.html|title=Study: Distractions, not phones, cause car crashes|publisher=CBS Interactive|work=CNET|access-date=16 July 2015|archive-date=18 January 2013|archive-url=https://web.archive.org/web/20130118084549/http://news.cnet.com/8301-30686_3-10444717-266.html|url-status=dead}}</ref>) Cell phones may interfere with sensitive medical devices. Questions concerning [[mobile phone radiation and health]] have been raised. 
* Human interface with device: Screens and keyboards tend to be small, which may make them hard to use. Alternate input methods such as speech or [[handwriting recognition]] require training.