REVIEW: iPhone 4 in 2020 - Still Usable? Throwback Retro Review

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Revisiting the Apple iPhone 4 in 2020 - Is it Obsolete?
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Details:
Apple iPhone 4 featuring FaceTime, which makes the dream of video calling a reality, and Apple’s stunning new Retina display, the highest resolution display ever built into a phone, resulting in super crisp text, images and video.

In addition, iPhone 4 features a 5 megapixel camera with LED flash, HD video recording, Apple’s A4 processor, a 3-axis gyro and up to 40 percent longer talk time—in a beautiful all-new design of glass and stainless steel that is the thinnest smartphone in the world.

iPhone 4 comes with iOS 4, the newest version of the world’s most advanced mobile operating system, which includes over 100 new features and 1500 new APIs for developers. iOS 4 features Multitasking, Folders, enhanced Mail, deeper Enterprise support and Apple’s new iAd mobile advertising platform.

Apple’s stunning 3.5 inch Retina display has 960 x 640 pixels—four times as many pixels as the iPhone 3GS and 78 percent of the pixels on an iPad™. The resulting 326 pixels per inch is so dense that the human eye is unable to distinguish individual pixels when the phone is held at a normal distance, making text, images and video look sharper, smoother and more realistic than ever before on an electronic display.

The iPhone 4 spent the longest time of all iPhones as Apple's flagship iPhone model at fifteen months. Although the succeeding 4S was announced in October 2011, the 4 continued to be sold as a midrange model until September 2012, and thereafter as the entry-level offering in Apple's lineup until September 2013 with the announcement of the iPhone 5S/iPhone 5C. The iPhone 4 had the longest lifespan of any iPhone ever produced, spanning close to four years and available in some developing countries until early 2015.

The Apple A4 was also used in the first-generation iPad (released in 2010), where it was clocked at its rated speed of 1 GHz.
The iPhone 4 has 512 MB of DRAM. The additional DRAM supports increased performance and multi-tasking.

The iPhone 4 uses a micro-SIM card on iPhone 4 devices running on a GSM network, which is positioned in an ejectable tray, located on the right side of the device. On a CDMA network, however, the phone connects to the network using an ESN. All prior models have used regular mini-SIM cards. Depending on the operator, micro-SIM cards may not be available for all networks globally. As a technical workaround it is possible to trim a mini-SIM card with a knife or scissors so that it fits into the micro-SIM tray.

As on prior models, all data is stored in flash memory, 8, 16 or 32 GB, and not on the SIM. Unlike prior generations, the storage capacity is not printed on the back of the unit.
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