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/.
Join CNET for full coverage from Apple's latest event. 1  Aug 17. iPhone 8: Most-wanted features. 2  Aug 4. HomePod, Apple's $349 Siri-enabled speaker, hits in December. 3  Jul 8. 12 top tricks iOS 11 will bring to your iPhone and iPad. 4  Jun 16. How Apple is squeezing more photos into your iPhone.