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The rear of an iPhone SE in Rose Gold color finish. The exterior design of iPhone SE is nearly identical to that of iPhone 5 and 5S, with the exception of matte-chamfered edges and an inset stainless steel rear Apple logo. The iPhone SE shares the same physical sizes and dimensions, so cases designed to fit the 5 and 5S will also fit an iPhone SE.
The iPhone 4 introduced Apple's new high-resolution "Retina display" (with a pixel density of 326 pixels per inch), while maintaining the same physical size and aspect ratio as its precursors, Apple's A4 system-on-chip, along with iOS 4—which notably introduced multitasking functionality and app folders.
The iPhone 4 was announced on June 7, 2010, at WWDC 2010, and introduced a redesigned body incorporating a stainless steel frame and a rear glass panel. [24] At release, the iPhone 4 was marketed as the "world's thinnest smartphone"; [ 24 ] it uses the Apple A4 processor, being the first iPhone to use an Apple custom-designed chip.
With the iPhone 12 Pro and Pro Max, the company is basically doing the same thing.
The iPhone 4 and iPhone 4s used stainless steel instead of aluminium due to Steve Jobs' preference for the metal which he thought, "looks beautiful when it wears". [47] The iPhone 5 is 18% thinner, 20% lighter, and has 12% less overall volume than its predecessor, the iPhone 4s. [48] The phone's aluminum body is 0.30 in (7.6 mm) thick.
The iPhone 4s uses the same proprietary 30-pin dock connector that is used on the iPhone 4, which was first introduced in the 3rd generation iPod. The iPhone 4s has an improved cellular (GSM) antenna design over the iPhone 4. The new antenna is divided up into two pieces within the stainless steel band that wraps around the sides of the smartphone.
The displays are manufactured worldwide by different suppliers. Currently, the iPad's display comes from Samsung, [12] while the MacBook Pro and iPod Touch displays are made by LG Display [13] and Japan Display Inc. [14] There was a shift of display technology from twisted nematic (TN) liquid-crystal displays (LCDs) to in-plane switching (IPS) LCDs starting with the iPhone 4 models in June 2010.
The iPhone 13 Pro has a 6.06 inch (154 mm) (marketed as 6.1-inch (15 cm)) OLED display with a resolution of 2532 × 1170 pixels (2.9 megapixels) at 460 PPI, while the iPhone 13 Pro Max has a 6.68 inch (170 mm) (marketed as 6.7-inch (17 cm)) OLED display with a resolution of 2778 × 1284 pixels (3.5 megapixels) at 458 PPI. Both models have the ...