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Samsung Galaxy S21 vs iPhone 12: Battle of the giants

The Samsung Galaxy S21 and Apple iPhone 12 series are among the best phones on the market. But which is right for you?
By

Published onAugust 22, 2021

Samsung Galaxy S21 vs iPhone 12 Pro 1
Adam Molina / Android Authority

Samsung and Apple are two of the leading smartphone brands in the US, and the Samsung Galaxy S21 and iPhone 12 represent their most powerful offerings. Both have a range of devices going all the way up to ultra-premium, but which one takes the cake in a head-to-head comparison?

See also: OnePlus 9 vs Samsung Galaxy S21

Aside from the obvious choice between Android and iOS, picking a winner isn’t so easy. Here’s everything you need to know about the Galaxy S21 vs iPhone 21, from specs to unique features and more.


Samsung Galaxy S21 vs iPhone 12


Features

The iPhone 12 and Galaxy S21 lineups are feature-packed, with just about anything you could want in a smartphone. They’ve got excellent camera performance, top-notch specs, and head-turning designs.

Each phone has multiple camera lenses. The iPhone 12 Mini and iPhone 12 both have 12MP wide-angle and 12MP ultra-wide lenses. The Galaxy S21 and S21 Plus also have 12MP wide-angle and ultra-wide sensors, with an additional 64MP telephoto shooter that should provide much better long-distance photos (if you’re into that kind of thing).

To get a telephoto lens on the iPhone, you’ll have to step up to the 12 Pro or 12 Pro Max models with an additional 12MP sensor. The latter also has a larger main sensor for improved low-light performance. The Galaxy S21 Ultra takes things to a whole other level, with a 108MP wide-angle, two 12MP telephoto (3x and 10x), and 12MP ultra-wide cameras. This makes it the most versatile of the bunch, but ultimately the best photos will come down to software tuning — stay tuned for our own testing.

As for the specs, you’re getting top-of-the-line performance no matter which phone you buy. Both the Snapdragon 888 and Apple Bionic A14 processors are best-in-class. Unlike in previous years, the Samsung Exynos 2100 shouldn’t be too far behind either based on initial impressions. The Galaxy models have more RAM, but due to iOS optimization, you won’t notice a difference.

Read also: Snapdragon 888 vs Exynos 2100 vs Kirin 9000 vs Apple A14

The main thing that separates each of these phones is the size. The iPhone 12 Mini is the smallest of the bunch, measuring just 5.4-inches. The standard iPhone 12 is also smaller than the smallest Galaxy S21 phone, at 6.1-inches vs 6.2-inches. The largest devices are 6.7-inches and 6.8-inches, with the Galaxy S21 Ultra barely edging out the iPhone 12 Pro Max as the largest option available.

However, the Galaxy S21 Ultra is the only one that’s a leg ahead when it comes to truly unique features. This year, it will have S Pen support for the first time something previously exclusive to the Galaxy Note series.

Price

Galaxy S21 Ultra vs iPhone 12 Pro Max camera dark
Robert Triggs / Android Authority
  • Galaxy S21: $799/€849/£769
  • S21 Plus: $999/€1,049/£949
  • S21 Ultra: $1,199/€1,249/£1,149
  • iPhone 12 Mini: $699/€809/£699
  • iPhone 12: $799/€909/£799
  • iPhone 12 Pro: $999/€1,159/£999
  • iPhone 12 Pro Max: $1,099/€1.259/£1,099

Samsung has stepped back from the exorbitant prices of last year’s Galaxy S20 lineup when it comes to pricing. Each of the new phones starts at $200 cheaper than their predecessors. This makes them attractive options for anyone looking for a flagship Android phone.

The Apple iPhone models are also relatively affordable, with the iPhone 12 Mini providing an inexpensive entryway into the iOS ecosystem. However, if you can, it’s worth bumping up to the iPhone 12 for the added screen real estate.

Related: The best Samsung Galaxy deals

The highest-end iPhone 12 Pro Max starts at $1,099, a bit less than the Galaxy S21 Ultra. Considering Samsung’s offering has more impressive camera optics (on paper) and S Pen support, it may warrant spending a bit more.

That said, you’ll have to buy the S Pen separately, which will run you about $30. It’s also worth noting that none of these phones come with chargers in the box. You’ll therefore have to shell out even more if you don’t have one handy.

iPhone 12 Pro holding bakc of phone against sunset
Apple iPhone 12 series
Four to choose from
There are a total of four new iPhones in Apple's iPhone 12 lineup: the iPhone 12, iPhone 12 Mini, iPhone 12 Pro, and iPhone 12 Pro Max. Brighter displays, faster processors, and more durable build quality are what you can expect with all four of these new phones.

Specs

Apple iPhone 12 MiniSamsung Galaxy S21Apple iPhone 12Samsung Galaxy S21 Plus
Display
Apple iPhone 12 Mini
5.4-inch Super Retina XDR OLED
2,340 x 1,080 resolution
HDR, True Tone
Wide color (P3)
2,000,000:1 contrast ratio
625 nits max brightness (typical); 1200 nits max brightness (HDR)
Ceramic Shield front
Samsung Galaxy S21
6.2-inch Dynamic AMOLED
Flat FHD+
2,400 x 1,080 at 421ppi
Adaptive 120Hz refresh rate
HDR10+ certified
Apple iPhone 12
6.1-inch Super Retina XDR OLED
2,532 x 1,170 resolution
HDR, True Tone
Wide color (P3)
2,000,000:1 contrast ratio
625 nits max brightness (typical); 1200 nits max brightness (HDR)
Ceramic Shield front
Samsung Galaxy S21 Plus
6.7-inch Dynamic AMOLED
Flat FHD+
2,400 x 1,080 at 394ppi
Adaptive 120Hz refresh rate
HDR10+ certified
Processor
Apple iPhone 12 Mini
Apple A14 Bionic
Samsung Galaxy S21
Qualcomm Snapdragon 888 or Samsung Exynos 2100
Apple iPhone 12
Apple A14 Bionic
Samsung Galaxy S21 Plus
Qualcomm Snapdragon 888 or Samsung Exynos 2100
RAM
Apple iPhone 12 Mini
4GB
Samsung Galaxy S21
8GB
Apple iPhone 12
4GB
Samsung Galaxy S21 Plus
8GB
Storage
Apple iPhone 12 Mini
64 / 128 / 256GB
Samsung Galaxy S21
128 or 256GB
Apple iPhone 12
64 / 128 / 256GB
Samsung Galaxy S21 Plus
128 or 256GB
MicroSD
Apple iPhone 12 Mini
No
Samsung Galaxy S21
No
Apple iPhone 12
No
Samsung Galaxy S21 Plus
No
Battery
Apple iPhone 12 Mini
Qi wireless charging up to 7.5W
Up to 50% charge in around 30 minutes with 20W adapter or higher (sold separately)

MagSafe:
Wireless charging up to 15W
Magnet array
Alignment magnet
Accessory Identification NFC
Magnetometer
Samsung Galaxy S21
4,000mAh
Fast wired and wireless charging
Reverse wireless charging
Apple iPhone 12
Qi wireless charging up to 7.5W
Up to 50% charge in around 30 minutes with 20W adapter or higher (sold separately)

MagSafe:
Wireless charging up to 15W
Magnet array
Alignment magnet
Accessory Identification NFC
Magnetometer
Samsung Galaxy S21 Plus
4,800mAh
Fast wired and wireless charging
Reverse wireless charging
Cameras
Apple iPhone 12 Mini
Rear:
-Wide-angle 12MP, ƒ/1.6, OIS, 7-element lens
-Ultra-wide 12MP, ƒ/2.4, 120° field of view, 5-element lens, lens correction

2x optical zoom out, digital zoom up to 5x, Night Mode, Deep Fusion, Smart HDR 3

Video:
HDR video with Dolby Vision up to 30fps
4K video at 24fps, 30fps, or 60fps
1080p HD video at 30fps or 60fps
720p HD video at 30fps
OIS for video (Wide)
2x optical zoom out, digital zoom up to 3x

Front:
-TrueDepth 12MP, ƒ/2.2

Night Mode, Deep Fusion, Smart HDR 3
Samsung Galaxy S21
Rear:
- Wide-angle: 12MP, ƒ/1.8, 1.8µm with OIS and dual-pixel AF
- Telephoto: 64MP, ƒ/2.0, 0.8µm with OIS and phase-detection AF
- Ultra-wide: 12MP, ƒ/2.2, 1.4µm with 120-degree FoV

3x hybrid optical/digital zoom
30x "Space Zoom"

Front:
- 10MP, ƒ/2.2, 1.22µm, with dual-pixel AF
Apple iPhone 12
Rear:
-Wide-angle 12MP, ƒ/1.6, OIS, 7-element lens
-Ultra-wide 12MP, ƒ/2.4, 120° field of view, 5-element lens, lens correction

2x optical zoom out, digital zoom up to 5x, Night Mode, Deep Fusion, Smart HDR 3

Video:
HDR video with Dolby Vision up to 30fps
4K video at 24fps, 30fps, or 60fps
1080p HD video at 30fps or 60fps
720p HD video at 30fps
OIS for video (Wide)
2x optical zoom out, digital zoom up to 3x

Front:
-TrueDepth 12MP, ƒ/2.2

Night Mode, Deep Fusion, Smart HDR 3
Samsung Galaxy S21 Plus
Rear:
- Wide-angle: 12MP, ƒ/1.8, 1.8µm with OIS and dual-pixel AF
- Telephoto: 64MP, ƒ/2.0, 0.8µm with OIS and phase-detection AF
- Ultra-wide: 12MP, ƒ/2.2, 1.4µm with 120-degree FoV

3x hybrid optical/digital zoom
30x "Space Zoom"

Front:
- 10MP, ƒ/2.2, 1.22µm, with dual-pixel AF
Connectivity
Apple iPhone 12 Mini
5G (sub‑6GHz and mmWave)
Gigabit LTE with 4x4 MIMO and LAA
Wi‑Fi 6 (802.11ax) with 2x2 MIMO
Bluetooth 5
Ultra Wideband chip for spatial awareness
NFC
Express Cards with power reserve
GPS, GLONASS, Galileo, QZSS, and BeiDou
Digital compass
Wi‑Fi
Cellular
iBeacon microlocation
Samsung Galaxy S21
4G LTE support
5G (sub-6GHz, SA and NSA, mmWave)
Wi-Fi 6E support
Apple iPhone 12
5G (sub‑6GHz and mmWave)
Gigabit LTE with 4x4 MIMO and LAA
Wi‑Fi 6 (802.11ax) with 2x2 MIMO
Bluetooth 5
Ultra Wideband chip for spatial awareness
NFC
Express Cards with power reserve
GPS, GLONASS, Galileo, QZSS, and BeiDou
Digital compass
Wi‑Fi
Cellular
iBeacon microlocation
Samsung Galaxy S21 Plus
4G LTE support
5G (sub-6GHz, SA and NSA, mmWave)
Wi-Fi 6E support
Operating System
Apple iPhone 12 Mini
iOS 14
Samsung Galaxy S21
One UI 3.1
Android 11
Apple iPhone 12
iOS 14
Samsung Galaxy S21 Plus
One UI 3.1
Android 11
Water resistance
Apple iPhone 12 Mini
IP68
Samsung Galaxy S21
IP68
Apple iPhone 12
IP68
Samsung Galaxy S21 Plus
IP68
Security
Apple iPhone 12 Mini
Face ID
Samsung Galaxy S21
Ultrasonic fingerprint sensor, face unlock
Apple iPhone 12
Face ID
Samsung Galaxy S21 Plus
Ultrasonic fingerprint sensor, face unlock
Color
Apple iPhone 12 Mini
Black, White, Product Red, Green, Blue
Samsung Galaxy S21
128GB in Phantom Violet, Phantom Gray, Phantom Pink, and Phantom White

256GB only in Phantom Gray

Future colors: Phantom Gold and Phantom Red
Apple iPhone 12
Black, White, Product Red, Green, Blue
Samsung Galaxy S21 Plus
128GB in Phantom Violet, Phantom Silver, and Phantom Black

256GB only in Phantom Black

Future colors: Phantom Gold and Phantom Red
Dimensions and weight
Apple iPhone 12 Mini
131.5 x 64.2 x 7.4mm
135g
Samsung Galaxy S21
71.2 x 151.7 x 7.9mm
171g
Apple iPhone 12
146.7 x 71.5 x 7.4mm
164g
Samsung Galaxy S21 Plus
75.6 x 161.5 x 7.8mm
202g
iPhone 12 ProSamsung Galaxy S21 UltraiPhone 12 Pro Max
Display
iPhone 12 Pro
6.1-inch Super Retina XDR OLED
2,532 x 1,170 resolution
HDR, True Tone
Wide color (P3)
2,000,000:1 contrast ratio
800 nits max brightness (typical); 1200 nits max brightness (HDR)
Ceramic Shield front
Samsung Galaxy S21 Ultra
6.8-inch Dynamic AMOLED
Curved WQHD+
3,200 x 1,440 at 515ppi
Adaptive 120Hz refresh rate
HDR10+ certified
iPhone 12 Pro Max
6.7-inch Super Retina XDR OLED
2,778 x 1,284 resolution
HDR, True Tone
Wide color (P3)
2,000,000:1 contrast ratio
800 nits max brightness (typical); 1200 nits max brightness (HDR)
Ceramic Shield front
Processor
iPhone 12 Pro
Apple A14 Bionic
Samsung Galaxy S21 Ultra
Qualcomm Snapdragon 888 or Samsung Exynos 2100
iPhone 12 Pro Max
Apple A14 Bionic
RAM
iPhone 12 Pro
6GB
Samsung Galaxy S21 Ultra
12 or 16GB
iPhone 12 Pro Max
6GB
Storage
iPhone 12 Pro
128 / 256 / 512GB
Samsung Galaxy S21 Ultra
128 / 256 / 512GB
iPhone 12 Pro Max
128 / 256 / 512GB
MicroSD
iPhone 12 Pro
No
Samsung Galaxy S21 Ultra
No
iPhone 12 Pro Max
No
Battery
iPhone 12 Pro
Qi wireless charging up to 7.5W
Up to 50% charge in around 30 minutes with 20W adapter or higher (sold separately)

MagSafe:
Wireless charging up to 15W
Magnet array
Alignment magnet
Accessory Identification NFC
Magnetometer
Samsung Galaxy S21 Ultra
5,000mAh
Fast wired and wireless charging
Reverse wireless charging
iPhone 12 Pro Max
Qi wireless charging up to 7.5W
Up to 50% charge in around 30 minutes with 20W adapter or higher (sold separately)

MagSafe:
Wireless charging up to 15W
Magnet array
Alignment magnet
Accessory Identification NFC
Magnetometer
Cameras
iPhone 12 Pro
Rear:
-Wide-angle 12MP, ƒ/1.6, dual OIS, 7-element lens, 100% Focus Pixels, Night Mode
-Ultra-wide 12MP, ƒ/2.4, 120° field of view, 5-element lens, lens correction, Night Mode
-Telephoto 12MP, ƒ/2.0, dual OIS, 6-element lens

2x optical zoom in, 2x optical zoom out, 4x optical zoom range, digital zoom up to 10x, Deep Fusion, Smart HDR 3, Apple ProRAW

Video:
HDR video with Dolby Vision up to 60fps
4K video at 24fps, 30fps, or 60fps
1080p HD video at 30fps or 60fps
720p HD video at 30fps
OIS for video (Wide)
2x optical zoom in, 2x optical zoom out; 4x optical zoom range, digital zoom up to 6x

Front:
-TrueDepth 12MP, ƒ/2.2

Night Mode, Deep Fusion, Smart HDR 3
Samsung Galaxy S21 Ultra
Rear:
- Wide-angle: 108MP, ƒ/1.8, 0.8µm with OIS and phase-detection AF
- Telephoto: 10MP, ƒ/2.4, 1.22µm with OIS, dual-pixel AF, and 3x optical zoom
- Telephoto: 10MP, ƒ/4.9, 1.22µm with OIS, dual-pixel AF, and 10x optical zoom
- Ultra-wide: 12MP, ƒ/2.2, 1.4µm with dual-pixel AF and a 120-degree FoV
- Laser AF sensor

10x optical zoom
100x "Space Zoom"

Front:
- 40MP, ƒ/2.2, 0.7µm, with phase-detection AF
iPhone 12 Pro Max
Rear:
-Wide-angle 12MP, ƒ/1.6, dual OIS, sensor-shift OIS, 7-element lens, 100% Focus Pixels, Night Mode
-Ultra-wide 12MP, ƒ/2.4, 120° field of view, 5-element lens, lens correction, Night Mode
-Telephoto 12MP, ƒ/2.2, dual OIS, 6-element lens

2.5x optical zoom in, 2x optical zoom out, 5x optical zoom range, digital zoom up to 12x, Deep Fusion, Smart HDR 3, Apple ProRAW

Video:
HDR video with Dolby Vision up to 30fps
4K video at 24fps, 30fps, or 60fps
1080p HD video at 30fps or 60fps
720p HD video at 30fps
OIS for video (Wide)
2.5x optical zoom in, 2x optical zoom out, 5x optical zoom range, digital zoom up to 7x

Front:
-TrueDepth 12MP, ƒ/2.2

Night Mode, Deep Fusion, Smart HDR 3
Connectivity
iPhone 12 Pro
5G (sub‑6GHz and mmWave)
Gigabit LTE with 4x4 MIMO and LAA
Wi‑Fi 6 (802.11ax) with 2x2 MIMO
Bluetooth 5
Ultra Wideband chip for spatial awareness
NFC
Express Cards with power reserve
GPS, GLONASS, Galileo, QZSS, and BeiDou
Digital compass
Wi‑Fi
Cellular
iBeacon microlocation
Samsung Galaxy S21 Ultra
4G LTE support
5G (sub-6GHz, SA and NSA, mmWave)
Wi-Fi 6E support
iPhone 12 Pro Max
5G (sub‑6GHz and mmWave)
Gigabit LTE with 4x4 MIMO and LAA
Wi‑Fi 6 (802.11ax) with 2x2 MIMO
Bluetooth 5
Ultra Wideband chip for spatial awareness
NFC
Express Cards with power reserve
GPS, GLONASS, Galileo, QZSS, and BeiDou
Digital compass
Wi‑Fi
Cellular
iBeacon microlocation
Operating System
iPhone 12 Pro
iOS 14
Samsung Galaxy S21 Ultra
One UI 3.1
Android 11
iPhone 12 Pro Max
iOS 14
Water resistance
iPhone 12 Pro
IP68
Samsung Galaxy S21 Ultra
IP68
iPhone 12 Pro Max
IP68
Security
iPhone 12 Pro
Face ID
Samsung Galaxy S21 Ultra
Ultrasonic fingerprint sensor, face unlock
iPhone 12 Pro Max
Face ID
Color
iPhone 12 Pro
Silver, Graphite, Gold, Pacific Blue
Samsung Galaxy S21 Ultra
128 GB in Phantom Silver and Phantom Black

256 and 512GB in Phantom Black

Future colors: Phantom Titanium, Phantom Navy, and Phantom Brown
iPhone 12 Pro Max
Silver, Graphite, Gold, Pacific Blue
Dimensions and weight
iPhone 12 Pro
146.7 x 71.5 x 7.4mm
189g
Samsung Galaxy S21 Ultra
75.6 x 165.1 x 8.9mm
229g
iPhone 12 Pro Max
160.8 x 78.1 x 7.4mm
228g

Samsung Galaxy S21 vs iPhone 12: Which should you buy?

Samsung Galaxy S21 vs iPhone 12 Pro 3
Adam Molina / Android Authority

Usually, it’s easy to declare a winner in at least a few categories, but it’s not so simple regarding the Galaxy S21 series vs the Apple iPhone 12 series. All of the phones in each lineup perform extremely well. You’re unlikely to be disappointed no matter which one you pick.

That said, for the very budget-conscious, the iPhone 12 Mini is a great option. It starts at $699, a full $100 less than the cheapest Galaxy S21 phone. It does, however, have huge bezels, a small screen, and somewhat limited battery life.

See also: Which Samsung Galaxy S21 phone is right for you?

Between the iPhone 12/12 Pro and the Galaxy S21/S21 Plus, the choice will likely come down to whether you want to use Android or iOS. Pricing is almost identical in the US, although the Galaxy S21 series is slightly cheaper in the rest of the world. Feature sets are also very similar. Nevertheless, the S21 series offers larger screens.

If you can afford the best flagship smartphones out there, the Galaxy S21 Ultra and iPhone 12 Pro Max are fantastic options. S Pen support is a nice touch on the S21 Ultra, but if what you’re looking for is everyday performance with great cameras, they’re both first-in-class. Granted, they’re also huge, so be prepared to use them two-handed.

Ultimately the biggest factor for many might be the operating system. Most people will want to stick with the ecosystem they’re used to, but in reality, there’s never been a better time to switch. Both Android and iOS are fully mature platforms at this point, and Samsung’s particular flavor of Android is among the best around.

Read also: How to switch from iPhone to Android


That’s it for our Samsung Galaxy S21 vs iPhone 12 comparison! Which one are you considering?

Which one are you considering?

731 votes

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