ZTE Axon 30 Pro 5G vs. Samsung Galaxy S21 Ultra 5G: A Head-to-Head Flagship Battle

The Samsung Galaxy S21 Ultra 5G launched as the undisputed Android flagship of 2021, commanding a premium price. Now, with the Axon 30 Pro 5G offering flagship specs at a significantly lower cost, the landscape has shifted. This comparison dissects the key differences between these two devices, focusing on performance, camera capabilities, and overall value.
Phones Images

🏆 Quick Verdict

For the average user prioritizing a stunning display and established brand reputation, the Samsung Galaxy S21 Ultra 5G remains a strong choice. However, the ZTE Axon 30 Pro 5G delivers nearly identical performance with the Snapdragon 888 and faster 55W charging, making it the superior value proposition for budget-conscious buyers.

PHONES
Phone Names ZTE Axon 30 Pro 5G Samsung Galaxy S21 Ultra 5G
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, 3, 5, 7, 8, 4, 12, 17, 20, 34, 38, 39, 40, 411, 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, 28, 41, 78 SA/NSA2, 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 / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 CDMA 800 1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 77, 78 SA/NSA/Sub6 - SM-G998B
Launch
Announced2021, April 152021, January 14
StatusAvailable. Released 2021, April 26Available. Released 2021, January 29
Body
Build-Glass front (Gorilla Glass Victus), glass back (Gorilla Glass Victus), aluminum frame
Dimensions163.6 x 75.3 x 7.9 mm (6.44 x 2.96 x 0.31 in)165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight186 g (6.56 oz)227 g (Sub6), 229 g (mmWave) (8.01 oz)
 -IP68 dust/water resistant (up to 1.5m for 30 min) Stylus support
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass Victus
Resolution1080 x 2400 pixels, 20:9 ratio (~395 ppi density)1440 x 3200 pixels, 20:9 ratio (~515 ppi density)
Size6.67 inches, 107.4 cm2 (~87.2% screen-to-body ratio)6.8 inches, 112.1 cm2 (~89.8% screen-to-body ratio)
TypeAMOLED, 1B colors, 120Hz, HDR10+Dynamic AMOLED 2X, 120Hz, HDR10+, 1500 nits (peak)
 -Always-on display
Platform
CPUOcta-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 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
ChipsetQualcomm SM8350 Snapdragon 888 5G (5 nm)Exynos 2100 (5 nm) - InternationalQualcomm SM8350 Snapdragon 888 5G (5 nm) - USA/China
GPUAdreno 660Mali-G78 MP14 - InternationalAdreno 660 - USA/China
OSAndroid 11, MyOS 11Android 11, up to 4 major Android upgrades, One UI 6.1
Memory
Card slotNoNo
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 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
FeaturesDual-LED flash, panorama, HDRLaser AF, LED flash, auto-HDR, panorama
Quad64 MP, f/1.8, 26mm (wide), 1/1.73", 0.8µm, PDAF 64 MP, f/2.4, 13mm, 120˚ (ultrawide) 5 MP (macro) Auxiliary lens108 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
Single16 MP, (wide)-
Video4K@30/60fps, 1080p@30fps, gyro-EIS, HDR10, 10‑bit video8K@24fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Selfie camera
FeaturesHDRHDR
Single16 MP, (wide)40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Video4K@30fps, 1080p@30fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker YesYes, with stereo speakers
 24-bit/192kHz audio32-bit/384kHz audio Tuned by AKG
Comms
Bluetooth5.2, A2DP, LE5.2, A2DP, LE
NFCYesYes
PositioningGPS, GLONASS, GALILEO, BDSGPS, 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
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, 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
Charging55W wired, QC425W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4200 mAhLi-Ion 5000 mAh
Misc
ColorsBlack, PinkPhantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown, Navy
ModelsA2022SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980
PriceAbout 400 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 114h
Camera- Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker- -25.5 LUFS (Very good)
Performance- AnTuTu: 657150 (v8) GeekBench: 3518 (v5.1) GFXBench: 33fps (ES 3.1 onscreen)

ZTE Axon 30 Pro 5G

  • Faster 55W charging significantly reduces charge times.
  • Generally more affordable price point.
  • Snapdragon 888 offers consistent performance.

  • Display likely inferior to the S21 Ultra in brightness and color accuracy.
  • Camera system likely less refined than Samsung’s.

Samsung Galaxy S21 Ultra 5G

  • Brighter, more vibrant display with excellent color accuracy.
  • More polished camera experience with advanced features.
  • Established brand reputation and ecosystem benefits.

  • Significantly higher price.
  • Exynos variant may experience thermal throttling.
  • Slower 25W wired charging.

Display Comparison

The Samsung Galaxy S21 Ultra boasts a superior display, reaching a measured peak brightness of 1023 nits, ensuring excellent visibility even in direct sunlight. While the Axon 30 Pro’s display specs aren’t detailed, Samsung’s panel technology and contrast ratio (Infinite nominal) provide a more vibrant and immersive viewing experience. The S21 Ultra’s adaptive refresh rate, likely utilizing LTPO technology (though not explicitly stated), further enhances smoothness and power efficiency, a feature not confirmed on the Axon 30 Pro.

Camera Comparison

Both devices are equipped for excellent photo and video capture, but the S21 Ultra likely holds an edge due to Samsung’s established image processing algorithms and potentially larger sensor sizes (specs not provided). The S21 Ultra’s camera system benefits from advanced features like Space Zoom and Single Take, enhancing versatility. While the Axon 30 Pro’s camera specs are not detailed, the inclusion of a 2MP macro camera suggests a focus on versatility at the expense of overall image quality; such sensors are often underwhelming. The S21 Ultra’s OIS (Optical Image Stabilization) is likely more sophisticated, resulting in sharper images and smoother video, particularly in low-light conditions.

Performance

Both phones utilize the Qualcomm Snapdragon 888 5G (5nm) in certain regions (USA/China), but the international S21 Ultra variant features the Exynos 2100 (5nm). While both chipsets are comparable, the Exynos 2100 has historically shown a slight tendency towards thermal throttling under sustained load, potentially impacting long gaming sessions. The Axon 30 Pro, consistently equipped with the Snapdragon 888, benefits from Qualcomm’s optimized thermal management. Both devices feature an octa-core CPU configuration with 1x Cortex-X1 prime core, 3x Cortex-A78 performance cores, and 4x Cortex-A55 efficiency cores, but the S21 Ultra’s international variant has slightly higher clock speeds on the A78 and A55 cores (2.80 GHz vs 2.42 GHz and 2.2 GHz vs 1.80 GHz respectively).

Battery Life

The Galaxy S21 Ultra achieves an endurance rating of 114 hours, indicating solid battery life. However, the Axon 30 Pro compensates with significantly faster 55W wired charging (QC4 compatible) compared to the S21 Ultra’s 25W wired (PD3.0) charging. This translates to a much quicker 0-100% charge time for the Axon 30 Pro. The S21 Ultra also offers 15W wireless charging (Qi) and 4.5W reverse wireless charging, features not explicitly mentioned for the Axon 30 Pro.

Buying Guide

Buy the ZTE Axon 30 Pro 5G if you need a powerful Snapdragon 888-powered phone without breaking the bank, and prioritize fast charging speeds. Buy the Samsung Galaxy S21 Ultra 5G if you prefer a brighter, more color-accurate display, a more refined camera experience, and the ecosystem benefits of the Samsung brand, and are willing to pay a premium.

Frequently Asked Questions

❓ Does the Exynos 2100 in the international S21 Ultra overheat during prolonged gaming sessions?
The Exynos 2100 has been known to exhibit some thermal throttling under sustained heavy load, such as extended gaming. While not a deal-breaker, users may experience slight performance drops after prolonged use. The Snapdragon 888 in the Axon 30 Pro generally manages thermals more efficiently.
❓ Is the 2MP macro camera on the Axon 30 Pro actually useful for taking detailed close-up shots?
Typically, 2MP macro cameras on smartphones offer limited detail and image quality. They often serve as a marketing feature rather than a genuinely useful tool for serious macro photography. The S21 Ultra’s camera system, while lacking a dedicated macro lens, likely achieves better close-up results through its primary sensor and processing capabilities.
❓ Does the Samsung Galaxy S21 Ultra support 90fps gameplay in demanding titles like PUBG Mobile?
The Galaxy S21 Ultra is capable of running PUBG Mobile at high frame rates, potentially up to 90fps depending on the graphics settings and the specific game optimization. However, achieving a consistently stable 90fps may require lowering graphics settings to manage thermals and maintain smooth gameplay.
❓ What charging protocol does the ZTE Axon 30 Pro 5G use, and how long does it take to fully charge?
The ZTE Axon 30 Pro 5G supports 55W wired charging with QC4 compatibility. This allows for a significantly faster charge time compared to the S21 Ultra’s 25W charging. While a precise 0-100% charge time isn’t specified, it’s expected to be under an hour, potentially around 30-45 minutes.