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The iPhone 15 Pro Max and iPhone Duo are most easily told apart by their overall size. On height, the iPhone 15 Pro Max measures 159.9 mm against the iPhone Duo's 117.8 mm — about 42.1 mm more. On width, the iPhone Duo measures 84.1 mm against the iPhone 15 Pro Max's 76.7 mm — about 7.4 mm more. On thickness, the iPhone Duo measures 11.3 mm against the iPhone 15 Pro Max's 8.3 mm — about 3.1 mm more. Folded, the iPhone Duo measures 84.1 mm wide, 117.8 mm tall, and 11.3 mm thick; unfolded, it measures 164.6 mm wide, 117.8 mm tall, and 5.2 mm thick.
The iPhone Duo is the heavier of the two at 254 g, compared with 221 g for the iPhone 15 Pro Max. That is a 33 g difference (15%). The gap is small enough that you would barely notice it day to day.
Fits in most pockets, may feel snug when sitting.
Most of the screen is reachable, shifting grip needed for corners.
Fits in larger pockets or jacket pockets only.
Best used with two hands for full screen access.
| Metric | iPhone 15 Pro Max | iPhone Duo | Diff |
|---|---|---|---|
| Width (folded) | 76.7 mm | 84.1 mm | -7.4 mm |
| Height (folded) | 159.9 mm | 117.8 mm | +42.1 mm |
| Depth (folded) | 8.3 mm | 11.3 mm | -3.1 mm |
| Weight | 221 g | 254 g | -33 g |
| Battery capacity | — | 4,700 mAh | — |
| Width (unfolded) | — | 164.6 mm | — |
| Height (unfolded) | — | 117.8 mm | — |
| Depth (unfolded) | — | 5.2 mm | — |