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When it comes to touchscreen phones, there is quite a variety to choose from. Before actually buying one, you should know what to look for at such a gadget.
The first thing you have to know is that there are two main types of touchscreen:
The resistive screen is made of many plastic layers which record the signal. When you touch the screen with your finger, these layers unite and set up an electrical connection. This kind of screen can also be used with a stylus.
The capacitive touchscreen is made of a mixture between glass and a transparent conductive material. Due to the fact that the human body itself is a good electrical conductor, when touching the screen with your finger you set up an electrical field and a signal is recorded. This is the type of screen that iPhone uses.
Its hard to say which type of screen is better and the choice depends strictly on each user. While the resistive screen can be used with a stylus and is also capable of recognizing handwriting, the capacitive screen is multi-touchable and has its advantages too.
The dimension of the screen is a very important aspect. Obviously, if you have to touch the screen with a stylus or your finger, the size has to be large enough so it can easily be used. Although a large screen should have at least 2,8 inches in order to be comfortable for the user, an even larger screen can become hard to use and often kitsch. The larger and brighter the screen, the larger amount of energy it needs. Many touchscreen smartphones users complain about the short life of the battery. So if you are going to buy a touchscreen phone, make sure you ask for technical details concerning the battery power in different using states (stand-by, talk time, music play and others).
Another important aspect of a touchscreen phone is the operating system. Many producers use operating systems that support a lot of applications, some of these applications are especially designed to work with a particular size of touchscreen. Set up a list of priorities concerning applications, think what exactly you want to use the touchscreen for and make sure you choose the one that best suits your needs.
Screen sensibility and response time are also very important. There are companies that produce great smartphones but their response time is very large making it uncomfortable for the user and quite annoying sometimes. Be sure you test these characteristics before buying a touchscreen phone.