The eternal question!

Let's dive into some key differences between the iPhone 13 series and the previous generation (iPhone 12 series):

**Design:**

* The iPhone 13 series has a slightly smaller notch (20% smaller) and thinner borders, making for a more immersive experience.
* The Pro models have a new camera module design with a larger lens and a more seamless glass design.

**Display:**

* All iPhone 13 models feature Super Retina XDR displays with higher contrast ratios and improved brightness.
* The Pro models have a 120Hz ProMotion display (up from 60Hz on the iPhone 12 Pro), making for smoother scrolling and animations.

** Cameras:**

* The standard iPhone 13 has a dual-camera setup with a new ultra-wide-angle lens and a larger sensor.
* The iPhone 13 Pro and Pro Max have triple cameras, including a telephoto lens with a longer focal length (2.5x vs. 2x on the iPhone 12 Pro).
* All iPhone 13 models feature improved low-light performance, thanks to a new camera processing system.

**Performance:**

* All iPhone 13 models are powered by Apple's A15 Bionic chip, which offers significant improvements in CPU and GPU performance.
* The Pro models have more RAM (6GB vs. 4GB on the standard iPhone 12 Pro) for smoother multitasking.

**Battery Life:**

* The iPhone 13 Pro Max has a slightly larger battery than its predecessor, resulting in up to an hour longer battery life.
* Other iPhone 13 models have similar or slightly improved battery life compared to their predecessors.

**Other changes:**

* iOS 15 is the new operating system, with features like improved notifications, better multitasking, and more.
* The iPhone 13 series supports faster charging (up to 25W) and has a new USB-C port.

Overall, while some of the changes might seem incremental, they all contribute to a more refined and powerful smartphone experience.