The equals sign means is equal to. It is telling us that one thing equates to another; that they are the same.
The iPhone 4 is the most recent iPhone to be discontinued from the iOS Update cycle. It did not receive the iOS 8 update, so it's final software version is iOS 7.1.2. You can update to this version through iTunes, or download it from an IPSW repository like this website: https://ipsw.me/.
Key Difference: The iPhone 6 was announced in September 2014 and is the newest phone in the Apple iPhone series after the iPhone 5, iPhone 5S and iPhone 5C. For all purposes the phone market is currently dominated by two segments: the iPhone and everything else.The iPhone is now on its sixth generation, the iPhone 6.As the number suggests the iPhone 6 was preceded by the iPhone 5 and its two later variants: iPhone 5S and 5C. In the iPhone 6, Apple has introduced many changes as compared to its previous models.he iPhone is now on its sixth generation, the iPhone 6. As the number suggests the iPhone 6 was preceded by the iPhone 5 and its two later variants: iPhone 5S and 5C. In the iPhone 6, Apple has introduced many changes as compared to its previous models.