You won't feel a dramatic difference in day-to-day use if you have a recent iPhone model, but it'll be noticeable if you own an iPhone 12 or older ... the same one that's used in the iPhone ...
The iPhone 16 Pro is powered by hexa-core Apple A18 Pro processor and it comes with 8GB of RAM. The phone packs 128GB, 256GB, 512GB, 1TB of internal storage cannot be expanded. As far as the cameras ...