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- Not considering cordless phones, CB radios, pagers, car phones etc.
- Iridium: catastrophes (Haiti), hard to reach places: expeditions, Arctic …
- ATT Terrestar hybrid cell & satellite switches to satellite when out of range, covers US, looks like Blackberry, not cheap $799 + $5/month on top of regular voice & data. Calls are $0.65/min. See http://www.pcworld.com/article/172944/terrestar_satellite_phone_coming_to_atandt.html
- Laptops, netbooks (OLPC), smartbooks (kindle,iPADs), Cell phone and smartphones
Cell phones
- See presentation** How they work
- History
- Cell phone components
- Power
- Carriers
- Coverage
- Bars
- Growth
- Concerns
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