Cheap iPhone 4
The iPhone 4 was released in 2012 and is now a popular choice among users searching for a cheap iPhone. With a 5MP camera, access to millions of apps and games and an elegant design, the 4 remains a powerful handset, regardless of age.
The iPhone 4 was released on 24th June 2010 as the successor to the iPhone 3GS. Although an entirely new design, many technology blogs and media outlets had already had a glimpse of the phone after an early prototype was left in a Californian bar. Regardless of this leak, Apple still fostered a great deal of hype, leading to 1.7 million units being sold in the first three days of release. In the UK, the phone represented the first iPhone to be released simultaneously on several networks, rather than the previous arrangement which had seen previous iterations exclusive on O2 on launch. The phone was discontinued in September 2013 following the release of the iPhone 5S and 5C, though production was briefly resumed in order to supply certain markets for a limited time, namely China. Handsets originally purchased from a network operator may need to be unlocked before working with another SIM.
The iPhone 4 is slimmer than its predecessor, with a thickness of 9.3mm. The weight was also trimmed down from previous models, weighing in at just 137g. The weight remained nominally the same, regardless of which of the various storage capacities it was supplied with. Customers could choose from 8/16/32GB sizes, with the price rising in accordance with the ability to store more music, films, photos and apps. The screen was heralded as a major leap forward by Apple, despite remaining the same size as previous iPhones. Rather than an increase in size, there was instead an increase in the number of pixels. The density of the pixels on the screen for the first time went beyond 330ppi, the amount at which it becomes incredibly hard for the human eye to notice individual pixels. This was billed as a ?retina? display and was the first of its type. The iPhone was eventually replaced by the iPhone 4S, though both phones enjoy the same appearance, the only noticeable aesthetic difference being a thin black line along the top left edge of the later model.
As will all iPhones, the iPhone 4 relies on iOS as an operating system. Shipping with iOS 4, many people are familiar with the features and functions of the OS thanks to its use in iPads and iPods, and the system having experienced several evolutions over its lifetime rather than any drastic revolutions. This was until 2013 and the launch of iOS7, a big leap forward from previous versions. While the iPhone 4 is officially supported, the memory requirements can be demanding and some users have reported performance issues. Keeping previous versions of the software (iOS 6 and below), however, allows users to continue as normal.
While previous iPhones and the output from many other manufacturers favoured a plastic coating for devices, the iPhone 4 was one of the first to bring ?premium? materials to the world of popular telecommunications devices. The front and back panels were made from Gorilla Glass, noted for resistance to scratching and now a feature on most smartphones. Despite being scratch resistant, the glass can be in danger of breaking or cracking; an issue for those purchasing second hand devices.
The edges are made from metal, meaning the only plastic on the outside of the phone is the home button. However, this approach led to issues with reception. One of the primary reasons why plastic is used in phone design is that it does not interfere with the signal reaching a phone. Wrapping the antenna inside a metal casing caused some users to experience issues with antenna reception on early models of the device, causing Apple to supply a dedicated bumper case to prevent users touching the affected areas. While resolved on later revisions, it can make using affected handsets difficult without a case.