Huawei Mate 40 Pro vs Samsung Galaxy S21 Ultra 5G: A Deep Dive Comparison

The Huawei Mate 40 Pro and Samsung Galaxy S21 Ultra 5G represent two distinct approaches to the high-end smartphone market. The Mate 40 Pro, powered by Huawei’s Kirin 9000, arrived amidst increasing geopolitical constraints, while the S21 Ultra, with its Snapdragon or Exynos variants, aimed to be the all-rounder Android champion. This comparison revisits these titans, assessing which holds up better in 2024.
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🏆 Quick Verdict

For the average user, the Samsung Galaxy S21 Ultra 5G emerges as the more practical choice. Its superior battery life (114h vs 97h), brighter display (1023 nits), and wider availability outweigh the Mate 40 Pro’s impressive charging speeds and Kirin 9000’s raw performance.

PHONES
Phone Names Huawei Mate 40 Pro Samsung Galaxy S21 Ultra 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 17, 18, 19, 20, 26, 28, 32, 34, 38, 39, 40, 41, 421, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30, 38, 39, 40, 41, 46, 48, 66, 71 - SM-G998U1
5G bands1, 3, 5, 7, 8, 28, 38, 40, 41, 77, 78, 79, 80, 84 SA/NSA/Sub62, 5, 25, 41, 66, 71, 260, 261 SA/NSA/Sub6/mmWave - SM-G998U1
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 CDMA2000 1xEV-DO 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B
Launch
Announced2020, October 222021, January 14
StatusAvailable. Released 2020, November 01Available. Released 2021, January 29
Body
BuildGlass front, glass back or eco leather back, aluminum frameGlass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
Dimensions162.9 x 75.5 x 9.1 mm (Glass) / 9.5mm (Leather)165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight212 g (7.48 oz)227 g (Sub6), 229 g (mmWave) (8.01 oz)
 IP68 dust/water resistantIP68 dust/water resistant (up to 1.5m for 30 min) Stylus support
Display
Protection-Corning Gorilla Glass Victus
Resolution1344 x 2772 pixels, 18.5:9 ratio (~456 ppi density)1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Size6.76 inches, 115.7 cm2 (~94.1% screen-to-body ratio)6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
TypeOLED, HDR10, 90HzDynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
 -Always-on display
Platform
CPUOcta-core (1x3.13 GHz Cortex-A77 & 3x2.54 GHz Cortex-A77 & 4x2.05 GHz Cortex-A55)Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - InternationalOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - USA/China
ChipsetKirin 9000 5G (5 nm)Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
GPUMali-G78 MP24Mali-G78 MP14 - InternationalAdreno 660 - USA/China
OSAndroid 10, EMUI 11, no Google Play ServicesAndroid 11, up to 4 major Android upgrades, One UI 6.1
Memory
Card slotNano Memory (uses shared SIM slot)No
Internal128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM
 UFS 3.1UFS 3.1
Main Camera
FeaturesLaser AF, color spectrum sensor, Leica optics, LED flash, panorama, HDRLaser AF, LED flash, auto-HDR, panorama
Quad-108 MP, f/1.8, 24mm (wide), 1/1.33", 0.8µm, PDAF, OIS 10 MP, f/2.4, 72mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video
Triple50 MP, f/1.9, 23mm (wide), 1/1.28", 1.22µm, multi-directional PDAF 12 MP, f/3.4, 125mm (periscope telephoto), PDAF, OIS, 5x optical zoom 20 MP, f/1.8, 18mm (ultrawide), PDAF-
Video4K@30/60fps, 1080p@30/60/120/240/480fps, 720p@960fps, 720p@3840fps, HDR, gyro-EIS8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Selfie camera
FeaturesHDR, panoramaHDR
Single13 MP, f/2.4, 18mm (ultrawide) TOF 3D, (depth/biometrics sensor)40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Video4K@30/60fps, 1080p@30/60/240fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 32-bit/384kHz audio 32-bit/384kHz audio Tuned by AKG
Comms
Bluetooth5.2, A2DP, LE5.2, A2DP, LE
Infrared portYes-
NFCYesYes
PositioningGPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavICGPS, GLONASS, BDS, GALILEO
RadioNoFM radio (Snapdragon model only; market/operator dependent)
USBUSB Type-C 3.1, OTGUSB Type-C 3.2, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct
Features
SensorsFace ID, fingerprint (under display, optical), accelerometer, gyro, proximity, barometer, compassFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
 -Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified) Ultra Wideband (UWB) support
Battery
Charging66W wired 50W wireless 5W reverse wireless25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4400 mAhLi-Ion 5000 mAh
Misc
ColorsMystic Silver, White, Black, Green, YellowPhantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy
ModelsNOH-NX9, NOH-AN00, NOH-AN01SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
PriceAbout 790 EUR$ 240.01 / C$ 353.20 / £ 202.99 / € 264.99
SAR-0.77 W/kg (head)     1.02 W/kg (body)
SAR EU-0.71 W/kg (head)     1.58 W/kg (body)
Pricing
128GB 12GB RAM-$ 384.99
256GB 12GB RAM-$ 998.00
512GB 12GB RAM-$ 1,179.99
RENEWED-$ 459.00
Tests
Battery life Endurance rating 97h Endurance rating 114h
Camera Photo / Video Photo / Video
Display Contrast ratio: Infinite (nominal) Contrast ratio: Infinite (nominal)
Loudspeaker -24.9 LUFS (Very good) -25.5 LUFS (Very good)
Performance AnTuTu: 686835 (v8) GeekBench: 3704 (v5.1) GFXBench: 43fps (ES 3.1 onscreen) AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)

Huawei Mate 40 Pro

  • Extremely fast 66W wired charging
  • Powerful Kirin 9000 chipset
  • Unique and refined design

  • Lack of Google Mobile Services
  • Shorter battery life compared to S21 Ultra
  • Limited app ecosystem

Samsung Galaxy S21 Ultra 5G

  • Brighter and more versatile display
  • Longer battery life
  • Wider app compatibility and Google services

  • Slower charging speeds
  • Potential for thermal throttling (Snapdragon variant)
  • Software can be bloated

Display Comparison

The Samsung Galaxy S21 Ultra 5G boasts a significantly brighter display, reaching a measured 1023 nits compared to the Mate 40 Pro’s 807 nits. This translates to better outdoor visibility. Both displays share an 'Infinite' contrast ratio, typical of OLED panels, but the S21 Ultra’s higher peak brightness provides a more vibrant and punchy image. While both are excellent, the S21 Ultra’s display is demonstrably superior for content consumption in bright environments.

Camera Comparison

Both devices excel in photography and videography, but approach it differently. While detailed sensor specs are missing, both offer comprehensive camera systems. The S21 Ultra’s versatility, with its multiple lenses and advanced processing, provides more creative options. The Mate 40 Pro’s image processing leans towards a more saturated look, while Samsung aims for a more natural, albeit sometimes over-sharpened, aesthetic. The S21 Ultra’s larger sensor size (implied by its flagship status) likely contributes to better low-light performance.

Performance

Both phones utilize 5nm fabrication processes, but the chipsets differ significantly. The Huawei Mate 40 Pro’s Kirin 9000 features a tri-cluster architecture with Cortex-A77 cores, while the S21 Ultra employs either the Exynos 2100 (international) or Snapdragon 888 (USA/China), both utilizing the newer Cortex-X1 prime core. The Cortex-X1 offers a performance advantage in single-core tasks. The S21 Ultra’s chipset choice also impacts thermal management; the Snapdragon 888 is known to throttle under sustained load, a potential issue the Kirin 9000 largely avoids. However, the S21 Ultra’s LPDDR5 RAM provides fast memory access, complementing the CPU’s capabilities.

Battery Life

The Samsung Galaxy S21 Ultra 5G delivers a substantial battery life advantage with an endurance rating of 114 hours, compared to the Mate 40 Pro’s 97 hours. While the Mate 40 Pro compensates with incredibly fast 66W wired charging (fully charging in under 40 minutes) and 50W wireless charging, the S21 Ultra’s 25W wired charging is considerably slower. The S21 Ultra’s larger battery capacity, combined with the efficiency of the Snapdragon or Exynos chipset, results in a more reliable all-day experience.

Buying Guide

Buy the Huawei Mate 40 Pro if you prioritize extremely fast charging (66W wired, 50W wireless) and are comfortable with the limitations of the Huawei ecosystem, including the absence of Google Mobile Services. Buy the Samsung Galaxy S21 Ultra 5G if you value a brighter, more versatile display, longer battery life, a more established software experience, and broader compatibility with apps and services.

Frequently Asked Questions

❓ Does the Exynos 2100 in the S21 Ultra suffer from overheating issues?
The Exynos 2100 variant of the S21 Ultra is known to run hotter than the Snapdragon 888 version, potentially leading to thermal throttling during prolonged gaming or demanding tasks. However, Samsung implemented software optimizations to mitigate this issue, and the impact is less pronounced in everyday use.
❓ Is the lack of Google Mobile Services on the Huawei Mate 40 Pro a dealbreaker?
For many users, the absence of Google Mobile Services (GMS) is a significant drawback. It means no direct access to the Google Play Store, requiring alternative app stores and workarounds for essential apps like Gmail and Google Maps. However, Huawei’s AppGallery has expanded, and many popular apps can be sideloaded.
❓ How does the 66W charging on the Mate 40 Pro compare to the S21 Ultra's 25W charging in real-world use?
The Mate 40 Pro’s 66W charging is dramatically faster. It can charge from 0-100% in under 40 minutes, while the S21 Ultra takes considerably longer, typically exceeding an hour. This makes the Mate 40 Pro ideal for users who frequently need a quick power boost.
❓ What are the benefits of the Kirin 9000's thermal management compared to the Snapdragon 888?
The Kirin 9000, built on a 5nm process, generally exhibits better thermal efficiency than the Snapdragon 888. This means it can sustain peak performance for longer periods without significant throttling, making it a strong contender for demanding tasks like gaming and video editing.