What size is the iPhone 13 (as well as the 12, 11, and X)?

If you're looking to buy an iPhone 13, or any iPhone, size is a big factor. Do you want something that can slip easily into your pocket, or do you believe that bigger is better? What about other factors related to size, like processing power, storage space, and battery life? Worry not, Goldilocks, we'll help you find the iPhone...