Five reasons why the iPhone 4 is the best iPhone

1. A spectacular display

Undoubtedly what catches the attention of the iPhone 4's screen. Involves the biggest difference compared to previous iPhone. It is simply spectacular. Trying to distinguish the pixels or find edges pixelated naked eye is impossible.

 The screen of the iPhone 4 shares the IPS technology and LED illumination also used in the iPad, monitors LED Cinema Display and new iMac. The IPS technology is an evolution compared to equivalent LCD screens OLED displays results and even superior to them in areas such as sharpness (allows smaller pixels), durability and reliability.

Among the improvements offered by the new screen side visibility increases.'s Screen can be viewed from almost any angle up to 178 º. 180 is already looking from the plane perpendicular.

                                                                                   

The display is visible from almost any angle preserving intact colors and contrast. Kind of hard to see on this type of display, including OLED.

 Although IPS probably something penalizes consumption (uses two transistors per pixel, instead of one) the result is a brighter display and contrast quadrupled from previous. Besides the colors are authentic. Whites are black, black and white really.

 The size is the same as the iPhone 3G S, 3.5 inches but the resolution is four times higher.. 640 x 960 Pixels The pixel density (the amount of light points to each square inch of surface) ppi or 326 ppi (pixels per inch or pixels per inch).

 How much is this reference value, 300 ppi is the typical limit in which the human eye is no longer able to distinguish 

Although a common computer screen can not reproduce the pixel density of the screen of a phone-in is usually higher because these are designed to look more closely at one semimacro Photo-Screen iPhone 4 (left half) and iPhone 3G represents the difference between both.

The screen of the iPhone 4 has four times the pixels than the iPhone 3G.
February. Outstanding design and construction

Construction of the iPhone 4 is superb and its appearance is, in my opinion, much nicer than their predecessors.
According to Apple the phone is built "from the inside out." This results in a very compact and slim phone. It measures less than an inch (9.3 mm) thick. The weight varies just 135 grams.

Although the iPhone 3G S was already thin, and seemed even more by its curved back-the iPhone 4 it really is, is less than an inch thick.

 Materials are polished steel and glass high resistance to shock and scratches. It is the same type of glass used in the windshields of high speed trains.

 Steel and glass are two materials more durable and attractive than plastic, although in theory the most stiffness worse absorbs the impact of a fall.

 Unlike previous models, the glass is the same on both sides of the phone, front and back. As with the iPhone 4 there is "buttered toast" effect: drop side that always will fall against the side of the glass.

 This time seems to really stick coating that prevents fingerprints remain on the surface of the phone, does the job. While using the phone while it is inevitable that they are finger marks on the screen, pull him back pocket has the same pristine appearance when it was released.

 The new Charger is also noteworthy because it is virtually invisible: it is only slightly longer than a ordinary plug socket. The iPhone 4 supports chargers previous models and the iPad, which is twice as powerful (10 W) and complete before the load.

 A special feature of the iPhone 4 is that, like the iPad uses a new format of SIM card, called microSIM. This is physically smaller than a conventional SIM.

The Microsim cards are pequeás than conventional SIM, but are fully compatible: all are limited to a reduction of the plastic around the chip.
But reducing the size microSIM simply dispense with much of the plastic surrounding the chip. So actually a normal SIM can work in iPhone 4 (as in the iPad) if trimmed some of the excess plastic around.