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/.
Third-party sellers on major e-commerce sites are selling both new iPhones at discounted prices. NEW DELHI: iPhone 6 and 6 Plus, which were launched in India in October 2014, have seen their prices drop on major e-commerce websites.