Apple’s 2026 iPhone Duo brings a foldable design with a compact 5.4-inch outer display and a larger 7.6-inch inner display. Here’s how the iPhone Duo dimensions compare when folded and unfolded, including its thickness, weight, and screen specifications.
What Are the iPhone Duo Dimensions?
According to Apple’s technical specifications, the iPhone Duo measures 4.64 inches tall, 3.31 inches wide and 0.44 inch thick when closed. When open, it measures 4.64 inches tall, 6.48 inches wide and 0.21 inch thick.
| Measurement | Folded (closed) | Unfolded (open) |
|---|---|---|
| Height | 4.64 in (117.8 mm) | 4.64 in (117.8 mm) |
| Width | 3.31 in (84.1 mm) | 6.48 in (164.6 mm) |
| Thickness | 0.44 in (11.3 mm) | 0.21 in (5.2 mm) |
| Weight | 8.96 oz (254 g) | 8.96 oz (254 g) |
| Screen size | 5.4 inches | 7.6 inches |
How Big Is the iPhone Duo Screen?
The outer 5.4-inch Super Retina XDR OLED display has a resolution of 1398 × 2034 pixels at 460 ppi. Unfolding the phone reveals a 7.6-inch Super Retina XDR OLED display with a resolution of 1878 × 2670 pixels at 430 ppi. Both screens support ProMotion adaptive refresh rates up to 120Hz, HDR, True Tone and Always-On functionality.
How Thin Is the iPhone Duo?
At just 5.2 mm (0.21 inch) thick when unfolded, the iPhone Duo has an exceptionally slim open profile. Folded, the thickness increases to 11.3 mm (0.44 inch). Its weight stays the same at 254 grams in either configuration.
Is the iPhone Duo Pocket-Friendly?
When closed, the iPhone Duo’s 4.64-inch height makes it shorter than many conventional smartphones, although its 3.31-inch width and 0.44-inch thickness give it a distinctive shape. Opening the phone nearly doubles its width, providing a larger workspace for videos, reading, gaming and multitasking.
iPhone Duo Dimensions: Frequently Asked Questions
How big is the iPhone Duo when folded?
It measures 4.64 inches tall, 3.31 inches wide and 0.44 inch thick.
How big is the iPhone Duo when unfolded?
It measures 4.64 inches tall, 6.48 inches wide and 0.21 inch thick.
What is the iPhone Duo screen size?
It has a 5.4-inch outer screen and a 7.6-inch folding inner screen.
How much does the iPhone Duo weigh?
Apple lists its weight at 8.96 ounces, or 254 grams.
Final Thoughts
The iPhone Duo dimensions show how Apple’s foldable iPhone combines a compact closed design with a much larger display when opened. Its 5.4-inch cover screen, 7.6-inch inner screen and 5.2-mm unfolded thickness make its two configurations useful for different everyday tasks.
Source: Apple iPhone Duo Technical Specifications.