The upcoming iPhone 16 Pros should boost their cameras to let you capture 4K video with double the frame rate at 120 frames per second (fps).
QuickTake
How to record video with your iPhone camera without switching out of Photo mode
Learn how to use the hidden QuickTake feature in the iPhone's built-in Camera app to record video without switching out of Photo mode and never miss a moment.
iOS 14 brings QuickTake recording and Camera app video toggles to older iPhones
The useful QuickTake feature plus changing video recording resolution and frame rate via dedicated toggles within the Camera app are now available on older devices as well.