Looking for an honest Apple iPhone 17 Air vs Samsung Galaxy S21 5G comparison in 2026? We scored both smartphones on the same six-dimension framework — performance, battery, display, camera, design and value — using identical methodology, so the numbers below are directly comparable. In our overall scoring the Apple iPhone 17 Air comes out ahead 58/100 to 46/100 — a 12-point gap. The widest gap is in performance, where the Apple iPhone 17 Air pulls noticeably ahead. On price the Samsung Galaxy S21 5G undercuts the Apple iPhone 17 Air by 571% ($133.99 vs $899), which materially changes the value calculus for budget-conscious buyers.

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Apple iPhone 17 Air edges out the Samsung Galaxy S21 5G in the smartphones category, especially in performance (benchmark 195 vs 75), scoring 58 vs 46. If you want the better overall smartphones, Apple iPhone 17 Air is the recommended choice.
Picking Apple iPhone 17 Air over Samsung Galaxy S21 5G means trading these off.
Apple
$899
Scores are relative within the smartphonescategory. Percentages show each dimension's weight in the overall score. A difference of less than 0.5 points is considered a tie.
✓ Pros
✗ Cons
✓ Pros
✗ Cons
| Spec | Apple iPhone 17 AirW | Samsung Galaxy S21 5G |
|---|---|---|
| Display | 6.6"✓ | 6.2" |
| Display Type | OLED | Dynamic AMOLED 2X |
| Resolution | — | 2400 x 1080 pixels |
| Refresh Rate | 120Hz | 120Hz |
| Brightness | — | 1300nits |
| HDR | — | HDR10+ |
| Protection | — | Gorilla Glass Victus |
| Chipset | Apple A19 | Snapdragon 888 |
| CPU | — | Octa-core (1x2.9 GHz & 3x2.80 GHz & 4x2.2 GHz) |
| GPU | — | Mali-G78 MP14 / Adreno 660 |
| RAM | 8GB | 8GB |
| Storage | 128GB | 128GB |
| Storage Options | — | 128GB, 256GB |
| Main Camera | 48MP | 64MP✓ |
| Aperture | — | f/1.8 |
| OIS | — | Yes |
| Video | — | 8K@24fps, 4K@60fps |
| Front Camera | 24MP✓ | 10MP |
| Battery | 3400mAh | 4000mAh✓ |
| Charging | 25W | 25W |
| Wireless Charging | — | 15W |
| OS | iOS 19 | Android 11, upgradable to Android 14 |
| Wi-Fi | — | Wi-Fi 6 (802.11ax) |
| Bluetooth | — | Bluetooth 5.0 |
| NFC | Yes | Yes |
| USB | — | USB Type-C 3.2 |
| Water Resistance | IP68 | IP68 |
| Biometrics | — | Ultrasonic fingerprint |
| Dimensions | — | 151.7 x 71.2 x 7.9 mm |
| Weight | 145g✓ | 169g |
| Colors | — | Phantom Gray, Phantom White, Phantom Violet, Phantom Pink |
| Price | 899$ | 133.99$✓ |
Buy Apple iPhone 17 Air if…
Buy the Apple iPhone 17 Air if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Buy Samsung Galaxy S21 5G if…
Choose the Samsung Galaxy S21 5G if budget is your top priority — it offers competitive specs at a lower price point.
Apple iPhone 17 Air edges out the Samsung Galaxy S21 5G in the smartphones category, especially in performance (benchmark 195 vs 75), scoring 58 vs 46. If you want the better overall smartphones, Apple iPhone 17 Air is the recommended choice.
Yes, Apple iPhone 17 Air scores higher overall (83 vs 71).
Samsung Galaxy S21 5G is cheaper at $133.99 vs $899 for the Apple iPhone 17 Air.
Buy the Apple iPhone 17 Air if you want the best performance in this comparison. It scores higher overall and is the recommended choice for most buyers.
Choose the Samsung Galaxy S21 5G if budget is your top priority — it offers competitive specs at a lower price point.
Samsung Galaxy S21 5G has a larger battery (4,000mAh vs 3,400mAh for the Apple iPhone 17 Air), which generally means longer use between charges.
Apple iPhone 17 Air has the larger display (6.6" vs 6.2").
Samsung Galaxy S21 5G has a higher-resolution main camera (64MP vs 48MP). Note that megapixels are one factor — sensor quality and processing also matter.
Apple iPhone 17 Air is lighter at 145g vs 169g.
Reviewed by VersusMatrix Editorial Team
Last updated: May 21, 2026
Methodology: AI-powered analysis of technical specifications from manufacturer data. Scores are calculated by comparing products across multiple dimensions and normalized relative to the full category database. Our editorial process is independent and not influenced by affiliate partnerships.