ZTE nubia RedMagic 5G vs. Samsung Galaxy S20 Ultra: A Deep Dive into Gaming and Flagship Features

Released in the early days of 5G, the ZTE nubia RedMagic 5G and Samsung Galaxy S20 Ultra represent divergent approaches to flagship smartphone design. The RedMagic 5G prioritizes uncompromised gaming performance, while the S20 Ultra aims for a more holistic, premium experience with a focus on camera capabilities and a broader feature set. This comparison dissects their key differences to help you determine which device best suits your needs.
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🏆 Quick Verdict

For dedicated mobile gamers, the ZTE nubia RedMagic 5G is the clear winner. Its focus on cooling, fast charging, and a high refresh rate display delivers a superior gaming experience. However, the Samsung Galaxy S20 Ultra excels in camera versatility and offers a more polished, all-around smartphone experience for users who prioritize photography and broader functionality.

PHONES
Phone Names ZTE nubia RedMagic 5G Samsung Galaxy S20 Ultra
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 20, 12, 17, 18, 19, 26, 34, 38, 39, 40, 411, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66
5G bands41, 78, 79 SA/NSA-
SpeedHSPA, LTE, 5G 7.5 Gbps DLHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE
 -CDMA2000 1xEV-DO
Launch
Announced2020, March 12. Released 2020, March 192020, February 11
StatusDiscontinuedAvailable. Released 2020, March 15
Body
BuildGlass front (Gorilla Glass), glass back (Gorilla Glass), aluminum frameGlass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frame
Dimensions168.6 x 78 x 9.8 mm (6.64 x 3.07 x 0.39 in)166.9 x 76 x 8.8 mm (6.57 x 2.99 x 0.35 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM
Weight218 g (7.69 oz)220 g (7.76 oz)
 -IP68 dust/water resistant (up to 1.5m for 30 min)
Display
ProtectionCorning Gorilla GlassCorning Gorilla Glass 6
Resolution1080 x 2340 pixels, 19.5:9 ratio (~388 ppi density)1440 x 3200 pixels, 20:9 ratio (~511 ppi density)
Size6.65 inches, 108.6 cm2 (~82.5% screen-to-body ratio)6.9 inches, 114.0 cm2 (~89.9% screen-to-body ratio)
TypeAMOLED, 144HzDynamic AMOLED 2X, 120Hz, HDR10+, 1400 nits (peak)
 -Always-on display 120Hz@FHD/60Hz@QHD refresh rate
Platform
CPUOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)Octa-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55)Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)
ChipsetQualcomm SM8250 Snapdragon 865 5G (7 nm+)Exynos 990 (7 nm+)Qualcomm SM8250 Snapdragon 865 5G (7 nm+)
GPUAdreno 650Mali-G77 MP11Adreno 650
OSAndroid 10, Redmagic 3.0Android 10, upgradable to Android 13, One UI 5
Memory
Card slotNomicroSDXC (uses shared SIM slot)
Internal128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 256GB 16GB RAM128GB 12GB RAM, 512GB 16GB RAM
 -UFS 3.0
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, auto-HDR, panorama
Triple64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.0, 13mm (ultrawide), 1.12µm 2 MP (macro)108 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)
Video8K@15fps, 4K@30/60fps, 1080p@30/60/120/240fps8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS
Selfie camera
FeaturesHDRHDR
Single8 MP, f/2.0, (wide), 1.12µm40 MP, f/2.2, 26mm (wide), 1/2.8", 0.7µm, PDAF
Video1080p@30fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack -No
35mm jackYesNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 -32-bit/384kHz audio Tuned by AKG
Comms
Bluetooth5.1, A2DP, aptX, LE5.0, A2DP, LE
NFCYesYes
PositioningGPS (L1+L5), GLONASS, BDS, GALILEOGPS, GLONASS, BDS, GALILEO
RadioNoFM radio (USA & Canada only)
USBUSB Type-C 3.0, OTG, accessory connectorUSB 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/6, 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) ANT+ Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified)
Battery
Charging55W wired, 56% in 15 min, 100% in 40 min45W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4500 mAhLi-Ion 5000 mAh
Misc
ColorsEclipse Black, Hot Rod Red, Black, Mars Red, Cyber Neon, TransparentCosmic Grey, Cosmic Black, Cloud White
ModelsNX659JSM-G988B/DS
PriceAbout 880 EURAbout 690 EUR
SAR-0.94 W/kg (head)     0.95 W/kg (body)
SAR EU-0.32 W/kg (head)     1.56 W/kg (body)

ZTE nubia RedMagic 5G

  • Exceptional gaming performance due to active cooling.
  • Ultra-fast 55W charging.
  • Long battery endurance (83h rating).

  • Camera system is likely less versatile than the S20 Ultra.
  • Design is overtly gaming-focused, potentially lacking mainstream appeal.

Samsung Galaxy S20 Ultra

  • Versatile and high-quality camera system.
  • Vibrant and bright Dynamic AMOLED 2X display.
  • Wireless and reverse wireless charging capabilities.

  • Can experience thermal throttling under sustained load.
  • Slower wired charging compared to the RedMagic 5G.

Display Comparison

The nubia RedMagic 5G boasts a 6.65-inch display capable of reaching 685 nits of peak brightness, ensuring visibility even in bright conditions. The Samsung Galaxy S20 Ultra, while not specified in the data, is known for its Dynamic AMOLED 2X display, typically exceeding 1200 nits peak brightness, offering a significantly more vibrant and visible experience outdoors. Both utilize a 7nm+ process, but the S20 Ultra's display technology provides superior color accuracy and contrast. The RedMagic 5G's focus on gaming is further emphasized by its high refresh rate (not specified, but a key feature), while the S20 Ultra offers an adaptive 120Hz refresh rate, balancing smoothness with battery efficiency.

Camera Comparison

The provided data only indicates 'Photo / Video' capabilities for the RedMagic 5G, suggesting a less emphasized camera system compared to the S20 Ultra. The S20 Ultra is renowned for its versatile camera array, including a 108MP main sensor, offering exceptional detail and dynamic range. While the S20 Ultra’s camera excels in various scenarios, the RedMagic 5G likely targets adequate image quality for casual use and social media sharing. The S20 Ultra’s advanced image processing and multiple lenses (ultra-wide, telephoto) provide a significantly broader photographic experience.

Performance

Both devices are available with the Qualcomm Snapdragon 865 5G (7nm+), but the RedMagic 5G is singularly focused on maximizing its potential. The RedMagic 5G’s CPU configuration (1x2.84 GHz Cortex-A77, 3x2.42 GHz Cortex-A77, 4x1.80 GHz Cortex-A55) is identical to the Snapdragon 865 variant of the S20 Ultra. However, the RedMagic 5G’s active cooling system – a key differentiator – allows it to sustain peak performance for longer periods without thermal throttling. The S20 Ultra, while powerful, can experience throttling under sustained load, particularly in the Exynos variant. The RedMagic 5G’s design prioritizes thermal management, directly impacting sustained gaming performance.

Battery Life

The nubia RedMagic 5G achieves an endurance rating of 83 hours, indicating strong battery life. It supports 55W wired charging, achieving 56% charge in 15 minutes and 100% in 40 minutes – a remarkably fast charging speed. The Samsung Galaxy S20 Ultra offers 45W wired charging (PD3.0), 15W wireless charging (Qi), and 4.5W reverse wireless charging. While the S20 Ultra offers wireless charging convenience, the RedMagic 5G’s faster wired charging significantly reduces downtime. The RedMagic 5G’s endurance rating suggests efficient power management, despite its focus on performance.

Buying Guide

Buy the ZTE nubia RedMagic 5G if you need a phone specifically optimized for extended gaming sessions, prioritizing performance and cooling over camera quality and mainstream features. Buy the Samsung Galaxy S20 Ultra if you prefer a versatile flagship with a top-tier camera system, a vibrant display, and a wider range of features, even if it means potentially sacrificing some gaming-specific optimizations.

Frequently Asked Questions

❓ Does the Exynos 990 chip in some S20 Ultra models suffer from overheating during prolonged gaming?
Yes, the Exynos 990 variant of the S20 Ultra is known to be more prone to thermal throttling than the Snapdragon 865 version, especially during extended gaming sessions. This can lead to reduced performance and a less consistent gaming experience. The RedMagic 5G, with its dedicated cooling system, mitigates this issue.
❓ Is the 55W charging on the RedMagic 5G compatible with standard USB-PD chargers?
While the RedMagic 5G supports USB-PD, achieving the full 55W charging speed requires a compatible charger specifically designed for that wattage. Standard USB-PD chargers may charge the device at a slower rate. The S20 Ultra's 45W charging also benefits from a PD charger.
❓ How does the RedMagic 5G's cooling system work, and is it noisy?
The RedMagic 5G utilizes an internal fan and vapor chamber cooling system to dissipate heat effectively. While the fan is audible under heavy load, it's generally not overly disruptive. The cooling system allows the phone to maintain peak performance for longer periods without throttling.
❓ Is the camera on the RedMagic 5G sufficient for everyday photography?
While the RedMagic 5G's camera is capable of taking decent photos in good lighting conditions, it doesn't match the versatility and image quality of the S20 Ultra's camera system. It's suitable for casual snapshots and social media sharing, but not ideal for serious photography enthusiasts.