iPhone Duo vs iPhone 8 Plus
Quick answer
The iPhone 8 Plus is 40.6 millimetres1.60 inches taller and 52 grams1.83 ounces lighter than the iPhone Duo.
The iPhone 8 Plus is 86.5 millimetres3.41 inches narrower and 40.6 millimetres1.60 inches taller than the iPhone Duo.
The iPhone 8 Plus on Amazon (paid link) has already stopped receiving updates, so it is stuck on an older version of iOS. The iPhone Duo (paid link) runs the newest system and lasts noticeably longer, but it costs many times more than a renewed 8 Plus and is thicker in the pocket. Choose based on whether you want current support.
Paid link.
Easier one-handed: iPhone Duo
Pocket: iPhone 8 Plus
Weight difference: Noticeable
iPhone DuoiPhone Duo
from $1,999 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 8 Plus
from $799 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (paid link)
Paid link.
TRUE SCALE · 1.2 PX/MM
TRUE SCALE · 2.1 PX/MM
Hand: US Army ANSUR II, 2012 (sex-balanced median). Pockets: The Pudding, 2018. Card: ISO/IEC 7810 ID-1.
iPhone Duo: 117.8 by 84.1 by 11.3 millimetres, 254 grams. iPhone 8 Plus: 158.4 by 78.1 by 7.5 millimetres, 202 grams.iPhone Duo: 117.8 by 164.6 by 5.2 millimetres, 254 grams. iPhone 8 Plus: 158.4 by 78.1 by 7.5 millimetres, 202 grams.
Duo, 8 Plus shown at 2.1 pixels per millimetre.
iPhone DuoiPhone Duo
from $1,999 at launch.
Launch price, not a live Amazon price.
Check price on Amazon (paid link)iPhone 8 Plus
from $799 at launch.
Launch price, not a live Amazon price.
Check price on Amazon Renewed (paid link)
Paid link.
Height: Duo 117.8 millimetres, 8 Plus 158.4 millimetres.Height: Duo 4.64 inches, 8 Plus 6.24 inches.Width: Duo 84.1 millimetres, 8 Plus 78.1 millimetres.Width: Duo 3.31 inches, 8 Plus 3.07 inches.Depth: Duo 11.30 millimetres, 8 Plus 7.50 millimetres.Depth: Duo 0.44 inches, 8 Plus 0.30 inches.Weight: Duo 254 grams, 8 Plus 202 grams.Weight: Duo 8.96 ounces, 8 Plus 7.13 ounces.
Height: Duo 117.8 millimetres, 8 Plus 158.4 millimetres.Height: Duo 4.64 inches, 8 Plus 6.24 inches.Width: Duo 164.6 millimetres, 8 Plus 78.1 millimetres.Width: Duo 6.48 inches, 8 Plus 3.07 inches.Depth: Duo 5.20 millimetres, 8 Plus 7.50 millimetres.Depth: Duo 0.20 inches, 8 Plus 0.30 inches.Weight: Duo 254 grams, 8 Plus 202 grams.Weight: Duo 8.96 ounces, 8 Plus 7.13 ounces.
Specifications
| Specification | Duo | 8 Plus |
|---|---|---|
| Height | 117.8 millimetres4.64 inches117.8 millimetres4.64 inches | 158.4 millimetres, 40.6 millimetres more6.24 inches, 1.60 inches more158.4 millimetres, 40.6 millimetres more6.24 inches, 1.60 inches more |
| Height, open | 117.8 millimetres4.64 inches | — |
| Height, closed | 117.8 millimetres4.64 inches | — |
| Width | 84.1 millimetres3.31 inches164.6 millimetres6.48 inches | 78.1 millimetres, 6.0 millimetres less3.07 inches, 0.24 inches less78.1 millimetres, 86.5 millimetres less3.07 inches, 3.41 inches less |
| Width, open | 164.6 millimetres6.48 inches | — |
| Width, closed | 84.1 millimetres3.31 inches | — |
| Depth | 11.30 millimetres0.44 inches5.20 millimetres0.20 inches | 7.50 millimetres, 3.80 millimetres less0.30 inches, 0.15 inches less7.50 millimetres, 2.30 millimetres more0.30 inches, 0.09 inches more |
| Depth, open | 5.20 millimetres0.20 inches | — |
| Depth, closed | 11.30 millimetres0.44 inches | — |
| Weight | 254 grams8.96 ounces254 grams8.96 ounces | 202 grams, 52 grams less7.13 ounces, 1.83 ounces less202 grams, 52 grams less7.13 ounces, 1.83 ounces less |
| Volume | 111.9 cubic centimetres6.83 cubic inches100.8 cubic centimetres6.15 cubic inches | 92.8 cubic centimetres, 19.2 cubic centimetres less5.66 cubic inches, 1.17 cubic inches less92.8 cubic centimetres, 8.0 cubic centimetres less5.66 cubic inches, 0.49 cubic inches less |
| Screen-to-body — Active display area over body area. Our own estimate, not an Apple figure. | 89 percent90 percent | 67 percent, 21 percent less67 percent, 23 percent less |
| Display size — Screen size is always quoted in inches. | 5.4 inches7.6 inches | 5.5 inches, 0.1 inches more5.5 inches, 2.1 inches less |
| Resolution | 1398 × 20341878 × 2670 | 1080 × 19201080 × 1920 |
| Pixel density | 460 pixels per inch430 pixels per inch | 401 pixels per inch, 59 pixels per inch less401 pixels per inch, 29 pixels per inch less |
| Cutout | Dynamic IslandNone | NoneNone |
| Rear main | 48MP Fusion f/1.648MP Fusion f/1.6 | 12MP12MP |
| Rear ultra-wide | 48MP Ultra Wide f/2.248MP Ultra Wide f/2.2 | —— |
| Rear telephoto | —— | —— |
| Front camera | 12MP Center Stage f/2.2 (outer), under-display FaceTime f/1.8 (inner)12MP Center Stage f/2.2 (outer), under-display FaceTime f/1.8 (inner) | 7MP7MP |
| Chip | A20 ProA20 Pro | A11 BionicA11 Bionic |
| Video playback — Apple's rated hours of video playback. Apple does not publish battery capacity. | 44 hrs31 hrs | 14 hrs14 hrs |
| Port | USB-CUSB-C | LightningLightning |
| Wireless | 5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem5G · Wi-Fi 7 · Bluetooth 6 · Apple C2 modem | 4G LTE · Wi-Fi · Bluetooth4G LTE · Wi-Fi · Bluetooth |
| Water resistance | IP68 (6m for 30 min)IP68 (6m for 30 min) | IP67 (1m for 30 min)IP67 (1m for 30 min) |
| Storage | 256 GB – 2 TB256 GB – 2 TB | 64 – 256 GB64 – 256 GB |
| Launch price — Base configuration at launch, in US dollars. | 1,999 dollars1,999 dollars | 799 dollars, 1200 dollars less799 dollars, 1200 dollars less |
| Released | Oct 2026Oct 2026 | Sep 2017Sep 2017 |
| Status | CurrentCurrent | LegacyLegacy |
Dimensions
The iPhone 8 Plus is 40.6 mm (1.60 in) taller, 6.0 mm (0.24 in) narrower, 3.80 mm (0.15 in) thinner and 52 g (1.83 oz) lighter than the iPhone Duo (closed). The iPhone Duo (closed) measures 117.8 × 84.1 × 11.30 mm (4.64 × 3.31 × 0.44 in) and weighs 254 g (8.96 oz). The iPhone Duo (open) measures 117.8 × 164.6 × 5.20 mm (4.64 × 6.48 × 0.20 in) and weighs 254 g (8.96 oz). The iPhone 8 Plus measures 158.4 × 78.1 × 7.50 mm (6.24 × 3.07 × 0.30 in) and weighs 202 g (7.13 oz).
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Questions about these phones
How much taller is the iPhone 8 Plus than the iPhone Duo?
The iPhone 8 Plus is 40.6 mm taller than the iPhone Duo when the iPhone Duo is closed. The iPhone Duo is 6 mm wider than the iPhone 8 Plus.
Is the iPhone Duo heavier than the iPhone 8 Plus?
Yes, the iPhone Duo weighs 254 g while the iPhone 8 Plus weighs 202 g, making the difference noticeable. The iPhone 8 Plus is 3.8 mm thinner than the closed iPhone Duo.
Which phone has a larger screen?
The iPhone 8 Plus has a 5.5 inch display compared to the 5.4 inch screen on the iPhone Duo. The difference is minimal at about 0.1 inches.
Is the iPhone Duo easier to use one-handed?
Yes, the iPhone Duo is rated easier for one-handed use and better for small hands. The iPhone 8 Plus is taller and may be harder to manage with one hand.
Which phone fits in a typical men's jeans pocket?
The iPhone 8 Plus fits in a typical men's jeans pocket while the iPhone Duo does not. The iPhone Duo is thicker and wider when closed.
Is upgrading to the iPhone Duo worth it for size alone?
The verdict states that a size only upgrade is worth it depends on your needs. The iPhone Duo offers a foldable design but is less pocketable than the iPhone 8 Plus.