Samsung Galaxy S20 vs. iPhone 11 Pro Max: A Deep Dive Comparison

Released in early 2020, the Samsung Galaxy S20 and Apple iPhone 11 Pro Max represent the pinnacle of Android and iOS smartphone technology of their time. While both devices have since been superseded, they remain relevant due to price drops and continued software support. This comparison focuses on the core differences between these two flagships, particularly their contrasting strengths in battery endurance and processing architecture.
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🏆 Quick Verdict

For the average user prioritizing longevity and consistent performance, the iPhone 11 Pro Max emerges as the superior choice. Its significantly longer endurance rating (102h vs 71h) and efficient A13 Bionic chip outweigh the Galaxy S20’s potentially brighter display and faster charging, especially considering the Exynos variant's potential thermal concerns.

PHONES
Phone Names Samsung Galaxy S20 Apple iPhone 11 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, 661, 2, 3, 4, 5, 7, 8, 11, 12, 13, 17, 18, 19, 20, 21, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 42, 46, 48, 66 - A2218
SpeedHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 MbpsHSPA, LTE 1.6 Gbps DL, EV-DO Rev.A 3.1 Mbps
TechnologyGSM / CDMA / HSPA / EVDO / LTEGSM / CDMA / HSPA / EVDO / LTE
 CDMA2000 1xEV-DO 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 34, 38, 39, 40, 41, 42, 46, 48, 66, 71 - A2161, A2220
Launch
Announced2020, February 112019, September 10
StatusAvailable. Released 2020, March 06Available. Released 2019, September 20
Body
BuildGlass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frameGlass front (Corning-made glass), glass back (Corning-made glass), stainless steel frame
Dimensions151.7 x 69.1 x 7.9 mm (5.97 x 2.72 x 0.31 in)158 x 77.8 x 8.1 mm (6.22 x 3.06 x 0.32 in)
SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM (China)
Weight163 g (5.75 oz)226 g (7.97 oz)
 IP68 dust/water resistant (up to 1.5m for 30 min)IP68 dust/water resistant (up to 4m for 30 min) Apple Pay (Visa, MasterCard, AMEX certified)
Display
ProtectionCorning Gorilla Glass 6Scratch-resistant glass
Resolution1440 x 3200 pixels, 20:9 ratio (~563 ppi density)1242 x 2688 pixels, 19.5:9 ratio (~458 ppi density)
Size6.2 inches, 93.8 cm2 (~89.5% screen-to-body ratio)6.5 inches, 102.9 cm2 (~83.7% screen-to-body ratio)
TypeDynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)Super Retina XDR OLED, HDR10, Dolby Vision, 800 nits (HBM), 1200 nits (peak)
 Always-on display 120Hz@FHD/60Hz@QHD refresh rate-
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 (2x2.65 GHz Lightning + 4x1.8 GHz Thunder)
ChipsetExynos 990 (7 nm+) - GlobalQualcomm SM8250 Snapdragon 865 5G (7 nm+) - USAApple A13 Bionic (7 nm+)
GPUMali-G77 MP11 - GlobalAdreno 650 - USAApple GPU (4-core graphics)
OSAndroid 10, upgradable to Android 13, One UI 5iOS 13, upgradable to iOS 26.1
Memory
Card slotmicroSDXC (uses shared SIM slot)No
Internal128GB 8GB RAM64GB 4GB RAM, 256GB 4GB RAM, 512GB 4GB RAM
 UFS 3.0NVMe
Main Camera
FeaturesLED flash, auto-HDR, panoramaDual-LED dual-tone flash, HDR (photo/panorama)
Single-13 MP, f/2.2, PDAF
Triple12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video12 MP, f/1.8, 26mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS 12 MP, f/2.0, 52mm (telephoto), 1/3.4", 1.0µm, PDAF, OIS, 2x optical zoom 12 MP, f/2.4, 120˚, 13mm (ultrawide), 1/3.6"
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, HDR, stereo sound rec.
Selfie camera
FeaturesHDRHDR
Single10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel 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 NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 32-bit/384kHz audio Tuned by AKG-
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
 Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified)Ultra Wideband (UWB) support
Battery
Charging25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wirelessWired, PD2.0, 50% in 30 min Wireless (Qi)
TypeLi-Ion 4000 mAhLi-Ion 3969 mAh, non-removable (15.04 Wh)
Misc
ColorsCosmic Grey, Cloud Blue, Cloud Pink, Cloud White, Aura RedMatte Space Gray, Matte Silver, Matte Gold, Matte Midnight Green
ModelsSM-G980, SM-G980F, SM-G980F/DSA2218, A2161, A2220, iPhone12,5
Price$ 252.72 / C$ 249.99 / £ 185.00 / € 185.00$ 233.00 / C$ 369.75 / £ 226.95 / € 249.00
SAR0.76 W/kg (head)     1.01 W/kg (body)1.16 W/kg (head)     1.17 W/kg (body)
SAR EU0.28 W/kg (head)     1.52 W/kg (body)0.95 W/kg (head)     0.99 W/kg (body)
Pricing
256GB 4GB RAM-$ 874.46
512GB 4GB RAM-$ 1,004.31
64GB 4GB RAM-$ 435.00
RENEWED-$ 485.00
Tests
Audio quality- Noise -94.3dB / Crosstalk -81.5dB
Battery life Endurance rating 71h Endurance rating 102h
Camera Photo / Video Photo / Video
Display Contrast ratio: Infinite (nominal) Contrast ratio: Infinite (nominal)
Loudspeaker -23.9 LUFS (Very good) -25.6 LUFS (Very good)
Performance AnTuTu: 525029 (v8) GeekBench: 12557 (v4.4), 2750 (v5.1) GFXBench: 44fps (ES 3.1 onscreen) AnTuTu: 459713 (v7), 536883 (v8) GeekBench: 13870 (v4.4), 3503 (v5.1) GFXBench: 57fps (ES 3.1 onscreen)

Samsung Galaxy S20

  • Faster 25W wired charging
  • Potentially brighter display
  • Reverse wireless charging capability

  • Lower battery endurance (71h)
  • Exynos variant may throttle under load
  • Performance variability between chipsets

Apple iPhone 11 Pro Max

  • Exceptional battery life (102h)
  • Consistent and powerful A13 Bionic chip
  • Thermally stable performance

  • Slower wired charging
  • No reverse wireless charging
  • Lacks 120Hz display

Display Comparison

Both the Galaxy S20 and iPhone 11 Pro Max boast 'Infinite' contrast ratios, indicative of OLED panel technology. However, measured brightness reveals a slight edge for the iPhone 11 Pro Max at 820 nits compared to the S20’s 814 nits. While the difference is minimal, it could be noticeable in direct sunlight. The S20’s 120Hz refresh rate (not specified in the data, but a key feature) would offer smoother scrolling, but this comes at the cost of battery life. The iPhone 11 Pro Max lacks a high refresh rate, prioritizing efficiency. Both devices likely employ PWM dimming, but the rate isn't specified, making it difficult to assess potential flicker-related issues for sensitive users.

Camera Comparison

Both phones are capable of capturing excellent photos and videos, but their approaches differ. The provided data doesn’t detail sensor sizes or specific camera features beyond 'Photo/Video' capability. However, Apple’s computational photography is renowned for its natural-looking images and consistent performance across all lenses. Samsung typically leans towards more vibrant and saturated colors. The S20’s variable chipset could also impact image processing performance, with the Snapdragon variant likely offering faster processing speeds. Without detailed sensor information, a definitive camera winner is difficult to declare, but Apple’s consistent image quality is a strong point.

Performance

The performance landscape is significantly different. The iPhone 11 Pro Max utilizes Apple’s A13 Bionic, a hexa-core chip known for its exceptional single-core performance and efficiency. The Galaxy S20, conversely, comes in two variants: a global Exynos 990 and a US Snapdragon 865. The Snapdragon 865 generally outperforms the Exynos 990, particularly in sustained workloads due to better thermal management. The Exynos 990, while powerful, has been known to throttle under heavy load. The A13 Bionic’s architecture, with its 'Lightning' and 'Thunder' cores, is optimized for iOS, providing a fluid and responsive experience. The S20’s octa-core configuration, while offering more cores, doesn’t necessarily translate to superior real-world performance, especially with the Exynos variant.

Battery Life

The iPhone 11 Pro Max decisively wins in battery endurance, achieving a remarkable 102 hours in testing compared to the Galaxy S20’s 71 hours. This 30-hour difference is substantial and translates to a full day of extra usage for the iPhone. While the S20 supports faster 25W wired charging (versus the iPhone’s PD2.0 charging with a 50% charge in 30 minutes), the iPhone’s superior efficiency means it requires less frequent charging. The S20 also offers 15W wireless and 4.5W reverse wireless charging, features absent in the iPhone 11 Pro Max, but these are secondary to the overall endurance advantage.

Buying Guide

Buy the Samsung Galaxy S20 if you prioritize a potentially brighter display (814 nits) and faster 25W wired charging, and are comfortable with the variability in performance between the Exynos and Snapdragon variants. Buy the Apple iPhone 11 Pro Max if you value exceptional battery life, a consistently powerful and thermally stable processor, and a streamlined user experience within the iOS ecosystem.

Frequently Asked Questions

❓ Does the Exynos 990 chip in the Galaxy S20 overheat during prolonged gaming sessions?
Yes, the Exynos 990 variant of the Galaxy S20 is known to experience thermal throttling during extended gaming or other demanding tasks. This can lead to reduced performance and frame rate drops. The Snapdragon 865 variant mitigates this issue due to its more efficient architecture.
❓ How does the iPhone 11 Pro Max's battery life hold up with heavy social media and video streaming usage?
The iPhone 11 Pro Max excels in this scenario. Its efficient A13 Bionic chip and large battery capacity allow for all-day usage even with intensive tasks like social media browsing and high-resolution video streaming. Users can realistically expect 8-10 hours of screen-on time with moderate to heavy usage.
❓ Is the 25W charging on the Galaxy S20 significantly faster in real-world use compared to the iPhone 11 Pro Max?
While the Galaxy S20 supports 25W charging, the difference in charging speed isn't as dramatic as the wattage suggests. The iPhone 11 Pro Max's optimized charging algorithm and efficiency mean it can reach a substantial charge level in a comparable timeframe, especially considering the larger battery capacity.