ElectroGear

Touch screen phones are among the hottest and trendiest phones to hit the mobile phone market. There are a number of different companies offering touch screen phones with the iPhone 3G, BlackBerry Storm and HTC phones leading the pack. Different touch screens work differently because the technologies employed are quite distinct. A common form of touch screen model employs the resistive technology. In this technology the screen is made up of several layers and the top layer is normally composed of a flexible film which is made up of clear polyester.

When the finger presses down on the top layer it comes into contact with the lower layers and with this the voltage is measured. This then allows for the location of the pressure to be computed. This technology allows for input with the use of fingers as well as through the stylus. However these touch screen phones are prone to scratches and tend to break down with time.

The #1 best-selling touch screen phone on Amazon.com is the
Samsung Eternity a867 Phone, Black (AT&T)

Capacitive touch screen phones are the other variety of phones and are a lot more sophisticated than those using the resistive technology. Apple’s iPhone as well as the Blackberry Storm are some of the phones using this technology. In this technology crystal clear glass is used for the touch surface. This glass has a circuit board sensor underneath it. Changes in electrical charge from the finger are identified by this sensor and unlike in resistive technology no pressure is needed in these touch screen phones. These phones do not wear out with time and multi touch gestures like pinching or spreading fingers to zoom are possible only with this technology.

There are some specific points that set apart good touch screen phones. Some of the best touch screen phones available in the market have large screens with high resolution and come equipped with strong battery life. A higher resolution results in sharper images and many touch screen models have resolutions from 400×240 to around 480×360 pixels.

Essential Links for Touch Screen Phones

• Review of the 2009 LG CU920 Touch Screen Phone
• Pros and Cons of using a Touch Screen Phone
• The New 2009 Sony Ericsson Sagio Touch Screen Phone
• June 2009 Touch Screen Phone Review

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