The biggest change under the hood for iPhone 13 Pro and iPhone 13 Pro Max is the Apple A15 chipset that offer a marked boost in performance
Apple officially discontinues older iPhones, including 13 Pro
iPhone comparison chart: Every iPhone compared
Apple iPhone 15 and iPhone 15 Pro: Specs, Price, Release Date
iPhone 15 Pro vs iPhone 13 Pro: Should you upgrade to the newest model?
iPhone 13 models, release date, specs and leaks - Savincom
iPhone 15: News, Price, Release Date, and Specs
Apple unveils iPhone 13 Pro and iPhone 13 Pro Max — more pro than ever before - Apple
iPhone 15 Pro vs iPhone 13 Pro: Should you upgrade to the newest model?
Why I'm buying the iPhone 15 Pro Max
iPhone 13 series - specs and pricing have been revealed!
Refurbished iPhone 13 Pro Max 256GB - Silver (Unlocked) - Apple
Apple iPhone 13 Pro specs - PhoneArena
iPhone 15 Pro rumors: Release date, features, colors, specs, price, and more
Here's the new iPhone 13 and everything else Apple just announced
iPhone 13 and 13 Pro review: If you could have three wishes