Your iPhone's size depends on the model. Screen size ranges from 4.7 inches (iPhone 6s) to 6.7 inches (iPhone 14 Pro Max), measured diagonally across the display. Physical dimensions include width, height, and thickness, which vary by generation and model.
Apple measures screen size diagonally from corner to corner, excluding rounded edges. This standard applies to all models since the iPhone 6. For example, the iPhone 14 Pro Max has a 6.7-inch OLED display, while the iPhone SE (2nd generation) uses a 4.7-inch Retina HD display. These numbers define how much screen space you have for apps, videos, and games.
Physical size matters for grip, pocket fit, and carrying comfort. A larger phone may offer better viewing but can feel bulky. The iPhone 14 Pro Max measures 160.8 mm tall, 78.6 mm wide, and 8.3 mm thick. The iPhone 11 Max is 160.8 mm × 78.6 mm × 8.9 mm. Even small differences affect usability.
Screen size is measured diagonally across the visible display area. Apple uses this method consistently across all models. The measurement starts at the top-left corner and ends at the bottom-right corner, passing through the center of the screen. Rounded corners are excluded from the calculation.
For physical dimensions, Apple lists width, height, and thickness in millimeters. These values are taken from the outer edges of the device, including the bezel and camera bump. The iPhone 14 Pro Max weighs 240 grams, while the iPhone 8 Plus weighs 202 grams. Weight affects how long you can hold the phone during calls or video sessions.
When comparing models, focus on both screen size and physical footprint. A 6.1-inch iPhone 14 has a smaller footprint than the 6.7-inch iPhone 14 Pro Max, despite similar screen sizes. The Pro Max model has a larger surface area due to wider bezels and a thicker frame.
The following table shows screen size, width, height, and thickness for major iPhone models released between 2016 and 2023.
| Model | Screen Size (Diagonal) | Width (mm) | Height (mm) | Thickness (mm) |
|---|---|---|---|---|
| iPhone 8 Plus | 5.5 inches | 77.8 | 158.2 | 7.5 |
| iPhone 11 Max | 6.5 inches | 78.6 | 160.8 | 8.9 |
| iPhone 14 | 6.1 inches | 71.5 | 146.7 | 7.8 |
| iPhone 14 Pro | 6.1 inches | 71.5 | 146.7 | 8.3 |
| iPhone 14 Pro Max | 6.7 inches | 78.6 | 160.8 | 8.3 |
| iPhone SE (2nd gen) | 4.7 inches | 67.3 | 138.4 | 7.6 |
Each model has distinct proportions. The iPhone 14 Pro Max has a taller screen than the iPhone 14, but both share the same width. This design choice allows for more vertical space without increasing the device's width.
Some users confuse screen size with resolution. A 6.1-inch iPhone 14 has a resolution of 2532 × 1170 pixels, while the iPhone 14 Pro Max has 2796 × 1290 pixels. Higher pixel density improves clarity, but doesn't change the physical size.
Many people assume all iPhones with the same screen size are the same physical size. That's false. The iPhone 14 and iPhone 14 Pro both have 6.1-inch screens, but the Pro model is slightly thicker and heavier due to its titanium frame and ceramic shield front.
Another misconception is that screen size includes the bezel. Apple's official specifications exclude the rounded edges and bezel from the measurement. The 6.7-inch display on the iPhone 14 Pro Max does not include the curved sides or the notch.
A non-obvious fact: the iPhone 11 Max and iPhone 14 share identical width and height. Despite being released five years apart, they are physically the same size. The difference lies in internal components and materials, not external dimensions.
Suppose you're upgrading from an iPhone 8 Plus to an iPhone 11 Max. The iPhone 8 Plus has a 5.5-inch screen, 77.8 mm width, 158.2 mm height, and 7.5 mm thickness. The iPhone 11 Max has a 6.5-inch screen, 78.6 mm width, 160.8 mm height, and 8.9 mm thickness.
Even though the screen size increased by 1 inch, the width grew by only 0.8 mm. Height increased by 2.6 mm. The thickness rose by 1.4 mm. This small increase makes the iPhone 11 Max noticeably larger in hand but still fits in most pockets designed for the 8 Plus.
When buying a case, ensure it matches the model. A case for the iPhone 8 Plus won't fit the iPhone 11 Max due to the different height and thickness. Always verify model-specific compatibility.
I once tested multiple cases on a friend's iPhone 11 Max and found that a generic "6.5-inch" case didn't align properly with the camera cutout. The misalignment caused the lens to rub against surfaces. Using a model-specific case solved the issue.
Check Apple's official website for accurate details. Go to apple.com/iphone and select your model. Scroll to the "Specifications" section under "Display." There, you'll find screen size, resolution, and physical dimensions.
Use the "Measure" app on iOS to compare your phone to known objects. Open the app, point the camera at your iPhone, and tap "Add Measurement." You can then compare it to a ruler or credit card to estimate size.
If you're unsure of your model, go to Settings > General > About. Look for "Model Name" or "Model Identifier." Enter the identifier into Apple's support site to get full specs.
Knowing your iPhone's size helps with choosing accessories, assessing portability, and understanding how it fits your daily routine. Always verify dimensions using official sources to avoid confusion.