iPhone Duo adds weight and thickness for a 7.6-inch foldable screen

Apple has released the iPhone Duo, marking the most significant change to the iPhone’s physical design in nearly two decades. According to a review by 9to5Mac, the device introduces a foldable, notebook-style form factor that combines a compact exterior with a large inner screen. This shift represents a major departure from the traditional slab design that has defined the product line since its inception, aiming to bridge the gap between smartphones and tablets for users seeking more screen real estate.

The iPhone Duo weighs 254 grams, which is five grams heavier than the iPhone 18 Pro Max. Despite this added mass, the reviewer found the device more comfortable to hold due to its shorter and squatter shape. The weight distribution differs significantly from previous models, making it feel more manageable in the hand, although prolonged one-handed use can still cause wrist fatigue. The device is notably thicker when closed, measuring 11.3mm, which is about 29% thicker than the iPhone 18 Pro and Pro Max models.

What we know

When unfolded, the iPhone Duo reveals a 7.6-inch display and becomes just 5.2mm thick, making it even thinner than the iPhone Air. The folded footprint measures 117.8mm tall and 84.1mm wide, which is 45.6mm shorter than the iPhone 18 Pro Max but only 6.1mm wider. This shorter, wider profile helped the reviewer find the device surprisingly pocketable despite its bulk. The hinge mechanism allows the device to transition between these states, enabling the large screen experience.

Defender's checklist

• Check whether your existing cases and accessories are compatible with the new foldable form factor.
• Verify that your insurance policy covers accidental damage to foldable screens and hinges.
• Review your hand size and grip strength to ensure comfortable one-handed operation.
• Assess whether the added weight and thickness fit within your daily carry preferences.

The background in plain language

Teams usually evaluate new hardware by balancing screen size against portability. Users often find that larger screens improve productivity but make devices harder to carry. When assessing foldable devices, check whether the hinge mechanism feels durable and whether the software adapts well to the changing shape. Consider how the device fits in your pockets or bags, as thickness and weight distribution impact daily comfort. Ensure that your workflow benefits from the extra screen space before committing to the new form factor.

What to do and how to stay safe: Apple

• Verify that your essential apps support the new screen dimensions and folding states.
• Check if your current protective cases are designed for the specific thickness of the closed device.
• Monitor your wrist comfort during extended use to determine if the weight distribution suits you.
• Wait for independent durability tests before making a purchase decision if hinge longevity is a concern.

General security guidance from the TechWire Beat newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

How much does the iPhone Duo weigh compared to the iPhone 18 Pro Max?

The iPhone Duo weighs 254 grams, which is five grams more than the iPhone 18 Pro Max.

Is the iPhone Duo thicker than the iPhone 18 Pro when closed?

Yes, the iPhone Duo is 11.3mm thick when closed, making it about 29% thicker than the iPhone 18 Pro.

What is the size of the inner display on the iPhone Duo?

The iPhone Duo features a 7.6-inch inner display that unfolds to a thickness of 5.2mm.