The iPhone Duo weighs 254 g, about 20% more than the Galaxy Z Fold 8 (201 g), and reviewers noticed. Every gram a case adds lands on a phone that’s already heavy.
We collected every published iPhone Duo case weight we could find, from 22 g to 74 g, so you can see exactly what each one adds. One honest note up front: our own listings don’t publish weights yet. We’re weighing all 36 of our cases on a retail Duo and will add them here, measured, not estimated.
- Lightest published: ThinBorne’s aramid case at about 22 g, but it leaves the hinge bare by design.
- Next: Benks ArmorGrid Air (23.5 g), Zagg Snap Lite (33 g), UAG Mouve (34 g), PITAKA Duo Edge (36 g), Mous Limitless (42 g).
- Heaviest published: OtterBox Defender Pro XT (74.4 g) and MOFT’s folio (73 g).
- Our lightest by design: the Clear MagSafe Case (0.2 cm, with a hinge cover) and the Aramid Fiber MagSafe Case. Measured weights coming from our fit test.
Every published iPhone Duo case weight
| Case | Case weight | Thickness | Duo + case | Source |
|---|---|---|---|---|
| ThinBorne Super Thin (aramid) | 22 g | 0.90 mm | 276 g | Brand |
| Benks ArmorGrid Air | 23.5 g | 1.3 mm | 277.5 g | Macworld |
| Zagg Crystal Palace Snap Lite | 33 g | — | 287 g | Macworld |
| UAG Mouve | 34 g | — | 288 g | Macworld |
| PITAKA Duo Edge | 36 g | 1.3 mm | 290 g | Macworld |
| Mous Limitless | 42 g | 1.65 mm | 296 g | Macworld |
| Torras Ostand Q3 VegSkin | 46 g | 3.35 mm | 300 g | Macworld |
| UAG Mouve XTE | 46 g | — | 300 g | Macworld |
| ESR Classic Hybrid | 55 g | 1.5 mm | 309 g | Macworld |
| OtterBox Lumen | 58.26 g | — | 312.26 g | Macworld |
| ESR Atelier with Flex Stand | 59 g | 2.3 mm | 313 g | Macworld |
| Nomad Magnetic Leather Back | 64 g | 2.2 mm | 318 g | Macworld |
| Nomad Traditional Leather Folio | 64 g | 2.7 mm | 318 g | Macworld |
| ESR Cyber Tough | 65 g | 2.5 mm | 319 g | Macworld |
| Zagg Crystal Palace Snap KS | 69 g | — | 323 g | Macworld |
| MOFT Dynamic Folio | 73 g | 1.9 mm | 327 g | Macworld |
| OtterBox Defender Series Pro XT | 74.4 g | — | 328.4 g | Macworld |
How heavy will your iPhone Duo be in its case?
Total weight calculator
Pick a case, or enter any case weight:
Light vs protected: the trade-off on a foldable
- The lightest cases save weight by leaving things out. ThinBorne’s 22 g case doesn’t cover the hinge, by design. On a foldable, the hinge is an outer edge when folded. Why it matters.
- A hinge cover, front glass and a raised camera lip each add a few grams. They also cover the parts that cost the most to fix: $379 for the outer screen and up to $1,499 for “other damage” without AppleCare+. Every repair fee.
- Materials matter. Aramid and thin polycarbonate are the lightest. Leather-style, folios, kickstands and multi-layer rugged builds sit at the heavy end.
- Grip can matter more than grams. Reviewers found the Duo hard to hold when closed. A few extra grams of grip may do more than a feather-light, slippery shell.
Our lightest iPhone Duo cases, by design
Clear MagSafe CaseDuo Case Co
$39.95 · weight: measuring now
- Profile: 0.2 cm, our thinnest published
- Magnets: N52
- Hinge: rebound cover
- Finish: anti-yellowing
The thinnest case we publish a figure for, and it still covers the hinge. A slim clear shell with N52 magnets. Choose the “Clear Magnetic” option.
- Thinnest published
- Hinge covered
- $39.95
- Camera protection not stated
Aramid Fiber MagSafe CaseDuo Case Co
$69.95 · weight: measuring now
- Build: aramid-style
- Profile: ultra-slim
- Magnets: MagSafe
- Colour: Silver
Aramid is what the lightest cases in the table above are made of: strong for its weight, with a fine woven grip. Ours adds built-in magnets.
- Aramid-style build
- MagSafe
- $69.95
- Hinge protection not stated
Magnetic Protective CaseDuo Case Co
$49.95 · weight: measuring now
- Profile: ultra-thin, lightweight
- Hinge: protected
- Front: tempered glass
- Magnets: built-in ring
Listed as ultra-thin and lightweight, yet it covers the hinge and the outer screen and has a magnetic ring. Light without leaving the important parts bare.
- Hinge + outer screen covered
- Ultra-thin
- No stand
Magnetic Silicone Protective CaseDuo Case Co
$39.95 · weight: measuring now
- Build: soft silicone, slim
- Camera: raised protection
- Shock: multi-layer
- Magnets: built-in ring
Soft silicone in a slim profile, with raised camera protection and magnets, for $39.95.
- Grippy and slim
- $39.95
- Hinge protection not stated
Built-In Stylus Holder CaseDuo Case Co
$49.95 · weight: measuring now
- Fit: slim and light
- Pen: spring-loaded slot
- Finish: skin-feel
- Colours: four
Listed as slim and light, with a spring-loaded pen slot for a compact stylus.
- Pen slot
- Slim
- Hinge protection not stated
Magnetic Hinge Protection CaseDuo Case Co
$49.95 · weight: measuring now
- Fit: slim, fold-friendly
- Hinge: full protection
- Front: protector frame
- Magnets: built-in ring
A slim, fold-friendly fit with full hinge protection, a front screen protector frame, raised camera protection and magnets.
- Hinge + front + camera
- Magnetic
- Material not stated
Frequently asked questions
What is the lightest iPhone Duo case?
Of the published weights, ThinBorne’s aramid Super Thin case is lightest at about 22 g (0.75 oz), followed by Benks ArmorGrid Air at 23.5 g. ThinBorne’s case leaves the hinge uncovered by design.
How much does the iPhone Duo weigh with a case?
The iPhone Duo weighs 254 g. With published case weights from 22 g to 74 g, it weighs about 276–328 g in a case.
How heavy is the iPhone Duo compared with the Galaxy Z Fold 8?
The iPhone Duo weighs 254 g and the Galaxy Z Fold 8 201 g, so the Duo is about 26% heavier, or the Fold 8 about 20% lighter.
What is the lightest iPhone Duo case with hinge protection?
Weights for hinge-covering cases aren’t widely published yet. Duo Case Co’s Clear MagSafe Case combines a rebound hinge cover with a 0.2 cm profile, the thinnest it publishes; its measured weight is being added from a retail fit test.
What is the heaviest iPhone Duo case?
Of published weights, the OtterBox Defender Series Pro XT at 74.4 g, followed by MOFT’s Dynamic Folio at 73 g.
Are aramid iPhone Duo cases lighter?
Generally, yes. The lightest published Duo case is aramid. Aramid fibre is strong for its weight, which is why it’s used for ultra-thin cases.
Disclosure: Duo Case Co makes the cases recommended in the picks and competes with the brands in the weight table. Competitor weights and thicknesses are as published by Macworld’s review or, for ThinBorne, the brand’s own listing (0.75 oz), in October 2026; we haven’t weighed them ourselves. No Duo Case Co weight is estimated; measured weights will be added from our retail fit test. iPhone Duo and Galaxy Z Fold 8 weights are from Apple and Samsung as reported by Tom’s Guide. Duo Case Co is an independent accessories company and is not affiliated with, sponsored by or endorsed by Apple Inc. or any brand named.
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