• The answer is that most iPhone 12 and iPhone 11 owners can probably forego the upgrade because their phones are still in good shape and there isn't anything that changes the experience significantly.
• However, owners of older iPhone models, particularly the iPhone XS and before, would likely benefit greatly in terms of camera functionality and battery life. Apple's older iPhones, which date back to the iPhone 6S generation, are still compatible with iOS 15, which was released earlier this week (here's our iOS 15 review), but they won't feel as quick or powerful as newer iPhone models.

Read More: I am planning to buy an iPhone. Should I buy iPhone 12 as its price was dropped or wait for any card offers to buy iPhone 13?