In both of our tests - Jetstream 2 and Basemark Web 3.0 - all three iPhones running iOS 15 saw better scores than when they were running iOS 14.7.1.Īs you can see from the chart below, in the Jetstream browser test the improvement was marginal for the two newer iPhones, but the old iPhone SE saw a significant improvement. SafariĪpple not only worked hard on the surface of Safari, it also improved the code in the background. We made measurements in iOS 14.7.1 and then we installed iOS 15 Release Candidate on all three devices and ran the same tests. We installed iOS 14.7.1 and restored from a private iCloud backup (so that the test accounts would represent typical conditions, with open Safari tabs and accumulated rubbish gathered over the years, rather than a sterile handset). Last week we put an iPhone 11, an iPhone X and a first generation iPhone SE to test. If you have an older iPhone you will no doubt be wondering if installing iOS 15 would be something you might regret later. Not only is there a question of whether iOS 15 could slow down their iPhone, the few new features that are actually available for them may not be worth the risk. Hence owners of older iPhone handsets have a real quandary when it comes to the question of whether to update to the new iPhone operating system. Read: Many iOS 15 features only work on newer iPhones
Apple has reserved some of the best features for the newer iPhones for good reason - older iPhones aren't capable of running them.
In the past we've heard iPhone users complain that their iPhones have slowed down after a major update like this, so this is a valid concern (even if Apple usually manages to address the issues with further software updates).Īpple claims to support all these iPhones with the iOS 15 update, but it is no coincidence that the company restricts some functions to newer devices (iPhone XS and later in this case). But many owners of these older iPhones, including the first-generation iPhone SE, iPhone 6s, and even the iPhone X, could be wondering if the new system will run well on their older chips. IOS 15 arrived on 20 September 2021 and it can be installed on a number of older iPhones.
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