Yes. GSM phones (phones sold by T-Mobile and AT&T) use triangulation.
Triangulation of the exact location of any given thing has become much easier with the development of satellite technology.
The cell phone , computers ,any types of gps
Yes. The iPhone is probably the most recognizable named phone that has this capability. The Droid by Motorola also has this, as do most 'smart' phones. Other phones that do not have GPS capability can still be tracked using cell phone tower triangulation, but this is not as accurate as GPS. The Google Android and Apple iPhone 3G offer GPS tracking phones. These are offered by T-Mobile and AT&T cell phone providers.
Any technology that facilitates learning is good for education. Computers, Projectors, Cell phone jammers....just to name a few.
There is always a possibility of finding cell phone batteries in any shop. But I would buy cell phone batteries at your local cell phone retailer, or the company that made your phone.
Nextag cell phone headphones can be used on any cell phone.
Yes, it is a smart phone; just like any other new smart phone on the market today, it has the features and updates taht the buyer is looking to get.
Any phone service that sells cell phones or a computer store for things like a MP3 player with wireless headphones.
Yes almost with any phone !
Cell phone providers such as Sprint and AT&T still carry basic cell phones without a touch screen or any added technology if you are looking for the bare minimum.
Your cell phone number is yours to port as you wish to and from any cell phone company.
leather cell phone cases can provide some insulation for a dropped cell phone.