If you use your phone to surf the Web, view photos, videos, or movies, fullscreen style is recommended, if you are a more focused user productivity you need answer many emails a day and edit spreadsheets and documents, one that has included Qwerty keyboard suits you. Conclusion as it relates to the design of the equipment, it is important to make a reflection about the importance of the design aesthetic and define what will be the main uses, for example, If you want to take photos at parties, so easy what do a self-portrait? It has a mirror to see you or screen double to frame the photo? If you write many text messages, is com the keyboard? are the keys small? is it easy to use? It has functions of auto-complete text (T9)? You can write messages with one hand?, if you’re going to surf the internet, do need a stylus (feather screen)?, among others. Music playback, with regard to the reproduction of music there are two main formats, used by iphones and MP3 for everyone else. In my personal opinion, I prefer MP3 files for compatibility that have become the standard market format, although there are format converters, you lose a little of the sound quality and long time when are considerable amounts of information. It is important to analyze if the computer has playback options appropriate to our needs such as: equalizers, lists of reproduction, sort folders, play audio books, as well as audio fidelity. Capture pictures: this point is simple, the more mega pixels have a camera, better is its definition except, in the case of cameras that use digital interpolation. A pixel is the smallest unit in which decomposes an image (a point), a mega pixel is equal to one million pixels, therefore, the amount of pixels in an image, is related with its quality and the level of distortion that present to make an enlargement (pixelation), therefore, if someone is going to enlarge an image to print a poster, or publish a magazineYou will need to take photos with a more mega pixels camera that someone who is going to print size photos photo frame or that is going to send an email, but in the case of a camera with interpolation digital (as it is the case of low-cost with many mega pixels and a small lens cell) what they do is simulate a larger image that in reality they take, using a computational program that fill in gaps (gaps in the image) pixels with colors that are appropriate according to the surrounding pixels, thus takes a picture, enlarge it and fills in the holes to make it look like an image of higher resolution (more mega pixels), outcomes are generally good, but not as much as a real resolution camera. .