Samsung Galaxy S20 Ultra 5G vs. Apple iPhone 12 Pro Max: Which 2020 Flagship Still Holds Up?

The Samsung Galaxy S20 Ultra 5G and Apple iPhone 12 Pro Max represented the pinnacle of smartphone technology in 2020. Now, several years later, with prices significantly reduced, they offer compelling value. This comparison dissects their strengths and weaknesses to determine which device remains the better choice for today’s user, considering advancements in newer models.
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🏆 Quick Verdict

For the average user in 2024, the iPhone 12 Pro Max emerges as the more consistently reliable choice. Its A14 Bionic chip delivers sustained performance, and the optimized iOS ecosystem provides a smoother, longer-supported experience. While the S20 Ultra boasts a brighter display and faster charging, the iPhone’s overall refinement and battery endurance give it the edge.

PHONES
Phone Names Samsung Galaxy S20 Ultra 5G Apple iPhone 12 Pro Max
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G988B1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71 - A2342
5G bands1, 3, 5, 7, 8, 28, 40, 77, 78 SA/NSA/Sub6 - SM-G988B1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78, 79, 260, 261 Sub6/mmWave - A2342
SpeedHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)HSPA, LTE, 5G, EV-DO Rev.A 3.1 Mbps
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 -1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 77, 78, 79 Sub6 - A2410, A2411, A2412
Launch
Announced2020, February 112020, October 13
StatusAvailable. Released 2020, March 06Available. Released 2020, November 13
Body
BuildGlass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frameGlass front, glass back, stainless steel frame
Dimensions166.9 x 76 x 8.8 mm (6.57 x 2.99 x 0.35 in)160.8 x 78.1 x 7.4 mm (6.33 x 3.07 x 0.29 in)
SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM (China)
Weight222 g (7.83 oz)228 g (8.04 oz)
 -IP68 dust/water resistant (up to 6m for 30 min) Apple Pay (Visa, MasterCard, AMEX certified)
Display
ProtectionCorning Gorilla Glass 6Ceramic Shield glass
Resolution1440 x 3200 pixels, 20:9 ratio (~511 ppi density)1284 x 2778 pixels, 19.5:9 ratio (~458 ppi density)
Size6.9 inches, 114.0 cm2 (~89.9% screen-to-body ratio)6.7 inches, 109.8 cm2 (~87.4% screen-to-body ratio)
TypeDynamic AMOLED 2X, 120Hz, HDR10+, 1400 nits (peak)Super Retina XDR OLED, HDR10, Dolby Vision, 800 nits (HBM), 1200 nits (peak)
Platform
CPUOcta-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) - GlobalOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) - USAHexa-core (2x3.1 GHz Firestorm + 4x1.8 GHz Icestorm)
ChipsetExynos 990 (7 nm+) - GlobalQualcomm SM8250 Snapdragon 865 5G (7 nm+) - USAApple A14 Bionic (5 nm)
GPUMali-G77 MP11 - GlobalAdreno 650 - USAApple GPU (4-core graphics)
OSAndroid 10, upgradable to Android 13, One UI 5.1iOS 14.1, upgradable to iOS 26.1
Memory
Card slotmicroSDXC (uses shared SIM slot)No
Internal128GB 12GB RAM, 256GB 12GB RAM, 512GB 16GB RAM128GB 6GB RAM, 256GB 6GB RAM, 512GB 6GB RAM
 -NVMe
Main Camera
FeaturesLED flash, auto-HDR, panoramaDual-LED dual-tone flash, HDR (photo/panorama)
Triple108 MP, f/1.8, 26mm (wide), 1/1.33", 0.8µm, PDAF, OIS 48 MP, f/3.5, 103mm (periscope telephoto), 1/2.0", 0.8µm, PDAF, OIS, 4x optical zoom, 10x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video 0.3 MP, TOF 3D, f/1.0, (depth)12 MP, f/1.6, 26mm (wide), 1/1.9", 1.7µm, dual pixel PDAF, sensor-shift OIS 12 MP, f/2.2, 65mm (telephoto), 1/3.4", 1.0µm, PDAF, OIS, 2.5x optical zoom 12 MP, f/2.4, 13mm, 120˚ (ultrawide), 1/3.4", 1.0µm TOF 3D LiDAR scanner (depth)
Video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS4K@24/25/30/60fps, 1080p@25/30/60/120/240fps, 10‑bit HDR, Dolby Vision HDR (up to 60fps), stereo sound rec.
Selfie camera
FeaturesHDRHDR
Single40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF12 MP, f/2.2, 23mm (wide), 1/3.6", 1.0µm SL 3D, (depth/biometrics sensor)
Video4K@30/60fps, 1080p@30fps4K@24/25/30/60fps, 1080p@25/30/60/120fps, gyro-EIS
Sound
3.5mm jack -No
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE
NFCYesYes
PositioningGPS, GLONASS, BDS, GALILEOGPS, GLONASS, GALILEO, QZSS
RadioFM radio (Snapdragon model only; market/operator dependent)No
USBUSB Type-C 3.2, OTGLightning, USB 2.0
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, hotspot
Features
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometerFace ID, accelerometer, gyro, proximity, compass, barometer
 -Ultra Wideband (UWB) support
Battery
Charging45W wired, PD3.0 15W wireless (Qi) 4.5W reverse wirelessWired, PD2.0, 50% in 30 min 15W wireless (MagSafe) 15W wireless (Qi2) - requires iOS 17.4 update
TypeLi-Ion 5000 mAhLi-Ion 3687 mAh (14.13 Wh)
Misc
ColorsCosmic Grey, Cosmic Black, Cloud WhiteSilver, Graphite, Gold, Pacific Blue
ModelsSM-G988, SM-G988U, SM-G988U1, SM-G9880, SM-G988B/DS, SM-G988N, SM-G988B, SM-G988W, SCG03A2411, A2342, A2410, A2412, iPhone13,4
Price€ 227.11 / $ 184.00 / £ 335.00$ 328.00 / C$ 549.75 / £ 270.67 / € 339.00
SAR0.94 W/kg (head)     0.95 W/kg (body)-
SAR EU0.32 W/kg (head)     1.56 W/kg (body)0.99 W/kg (head)     0.99 W/kg (body)
Pricing
128GB 6GB RAM-$ 599.99
256GB 6GB RAM-$ 728.45
512GB 6GB RAM-$ 886.67
RENEWED-$ 627.00
Tests
Battery life- Endurance rating 95h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -23.8 LUFS (Very good)
Performance- AnTuTu: 638584 (v8) GeekBench: 4240 (v5.1) GFXBench: 55fps (ES 3.1 onscreen)

Samsung Galaxy S20 Ultra 5G

  • Brighter display for outdoor visibility
  • Faster 45W wired charging
  • More customizable Android OS

  • Exynos variant can suffer from thermal throttling
  • Less efficient battery life
  • Software support is ending

Apple iPhone 12 Pro Max

  • Superior sustained performance with A14 Bionic
  • Longer software support from Apple
  • More efficient battery management

  • Slower wired charging speed
  • Less display brightness than S20 Ultra
  • Less customization options in iOS

Display Comparison

The Samsung Galaxy S20 Ultra 5G’s display leads in peak brightness, achieving 894 nits measured, compared to the iPhone 12 Pro Max’s 822 nits. This translates to better visibility in direct sunlight. However, the iPhone 12 Pro Max boasts an infinite (nominal) contrast ratio, delivering deeper blacks and a more visually striking image. Both displays offer excellent color accuracy, but Samsung’s panel is larger, catering to users who prioritize immersive viewing. The S20 Ultra's higher resolution also contributes to a sharper image, though the difference is subtle on these screen sizes.

Camera Comparison

Both phones excel in camera performance, but approach it differently. The S20 Ultra’s camera system is geared towards versatility, offering features like Space Zoom. However, the iPhone 12 Pro Max’s image processing prioritizes natural colors and accurate detail. While the S20 Ultra’s sensor size isn’t specified, its focus on high megapixel counts (though not explicitly stated in the data) doesn’t necessarily translate to superior image quality in all conditions. The iPhone 12 Pro Max’s computational photography and video recording capabilities are consistently praised for their realism and dynamic range. Both are capable of excellent photo and video, but the iPhone’s consistency and ease of use give it a slight edge.

Performance

The chipset battle pits the Exynos 990 (global) or Snapdragon 865 (USA) against Apple’s A14 Bionic. While the Snapdragon 865 variant of the S20 Ultra offers competitive performance, the A14 Bionic, fabricated on a 5nm process, consistently outperforms both Exynos and Snapdragon in both single-core and multi-core benchmarks. The A14’s hexa-core architecture (2x3.1 GHz Firestorm + 4x1.8 GHz Icestorm) is more efficient, leading to less thermal throttling during prolonged gaming sessions. The S20 Ultra’s octa-core configuration, while powerful on paper, struggles to maintain peak performance under sustained load, particularly the Exynos variant. Both devices feature 6GB of RAM, but iOS’s memory management is demonstrably more efficient.

Battery Life

Endurance ratings reveal a slight advantage for the iPhone 12 Pro Max at 95 hours, compared to the S20 Ultra’s 87 hours. This difference is likely due to the A14 Bionic’s superior power efficiency and iOS’s optimized power management. The S20 Ultra compensates with significantly faster 45W wired charging (PD3.0), allowing for a full charge in under an hour, while the iPhone 12 Pro Max tops out at 50% in 30 minutes with PD2.0. Both support 15W wireless charging, though the iPhone 12 Pro Max benefits from MagSafe, offering a more secure and efficient wireless charging experience (requires iOS 17.4 for Qi2 compatibility).

Buying Guide

Buy the Samsung Galaxy S20 Ultra 5G if you prioritize a brighter, more vibrant display for media consumption and require the fastest possible wired charging speeds. It’s also a good option for Android enthusiasts who value customization. Buy the Apple iPhone 12 Pro Max if you prefer a streamlined user experience, long-term software support, and consistently strong performance, even under sustained load. It’s ideal for users deeply embedded in the Apple ecosystem.

Frequently Asked Questions

❓ Does the Exynos 990 in the S20 Ultra overheat during extended gaming sessions?
Yes, the Exynos 990 variant of the S20 Ultra is known to throttle under sustained load, leading to reduced performance during prolonged gaming. The Snapdragon 865 version fares better, but still doesn't match the A14 Bionic's thermal efficiency.
❓ Is the 15W wireless charging on both phones significantly slower than wired charging?
Yes, both phones offer 15W wireless charging, but it's considerably slower than their wired charging capabilities. The S20 Ultra's 45W wired charging is much faster, while the iPhone 12 Pro Max benefits from MagSafe for a more efficient wireless experience, though still slower than wired.
❓ How does the iPhone 12 Pro Max's software support compare to the S20 Ultra's?
Apple provides significantly longer software support for its iPhones. The iPhone 12 Pro Max will continue to receive iOS updates for several years, while Samsung has largely ended major software updates for the S20 Ultra, impacting security and feature availability.
❓ Is the difference in display resolution between the two phones noticeable in everyday use?
While the S20 Ultra has a higher resolution display, the difference is subtle on these screen sizes and is unlikely to be noticeable in most everyday use cases. The iPhone 12 Pro Max's display still offers excellent sharpness and clarity.