
The iPhone 15 Plus and iPhone Duo are most easily told apart by their overall size. On height, the iPhone 15 Plus measures 160.9 mm against the iPhone Duo's 117.8 mm — about 43.1 mm more. On width, the iPhone Duo measures 84.1 mm against the iPhone 15 Plus's 77.8 mm — about 6.3 mm more. On thickness, the iPhone Duo measures 11.3 mm against the iPhone 15 Plus's 7.8 mm — about 3.5 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 201 g for the iPhone 15 Plus. That is a 53 g difference (26%). In daily handling the difference is easy to feel.
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 Plus | iPhone Duo | Diff |
|---|---|---|---|
| Width (folded) | 77.8 mm | 84.1 mm | -6.3 mm |
| Height (folded) | 160.9 mm | 117.8 mm | +43.1 mm |
| Depth (folded) | 7.8 mm | 11.3 mm | -3.5 mm |
| Weight | 201 g | 254 g | -53 g |
| Battery capacity | — | 4,700 mAh | — |
| Width (unfolded) | — | 164.6 mm | — |
| Height (unfolded) | — | 117.8 mm | — |
| Depth (unfolded) | — | 5.2 mm | — |