For the first time ever, the iPhone 18 Pro and Pro Max include a genuine variable aperture. It's paired with a new set of manual controls, upgraded video features, the new A20 Pro chip, and a fresh approach to photo authenticity, making this arguably the most substantial camera overhaul Apple has shipped in years.

Upgrading your phone's system is a big step. Here's how to make a good backup of your data just in case something goes sideways.