ZTE nubia Red Magic 5G vs. Samsung Galaxy S20 Ultra: A Deep Dive Comparison

The ZTE nubia Red Magic 5G and Samsung Galaxy S20 Ultra represent divergent philosophies in the flagship smartphone space. The Red Magic 5G aggressively targets mobile gamers with a focus on cooling and performance, while the S20 Ultra aims for a more holistic premium experience encompassing camera prowess, display quality, and broader feature sets. This comparison dissects their strengths and weaknesses to determine which device best suits your needs.
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🏆 Quick Verdict

For dedicated mobile gamers, the ZTE nubia Red Magic 5G is the clear winner. Its Snapdragon 865, coupled with a superior cooling system and gaming-centric features, delivers sustained performance the S20 Ultra struggles to match. However, the Samsung Galaxy S20 Ultra remains a compelling choice for users prioritizing camera versatility and a more polished, all-around smartphone experience.

PHONES
Phone Names ZTE nubia Red Magic 5G Samsung Galaxy S20 Ultra
Network
2G bandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 HSDPA 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-A, 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 122020, February 11
StatusAvailable. Released 2020, March 19Available. 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)
SIMDual SIM (Nano-SIM, dual stand-by)· 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 YesNo
35mm jack-No
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 min (advertised)45W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4500 mAh, non-removableLi-Ion 5000 mAh
Misc
ColorsEclipse Black, Hot Rod Red, Black, Mars Red, Cyber Neon, TransparentCosmic Grey, Cosmic Black, Cloud White
ModelsNX659JSM-G988B/DS
Price$ 890.00About 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)
Tests
Battery lifeEndurance rating 83h-
Camera Photo / Video-
Display Contrast ratio: Infinite (nominal)-
Loudspeaker -22.6 LUFS (Excellent)-
Performance AnTuTu: 557056 (v8) GeekBench: 13370 (v4.4), 3387 (v5.1) GFXBench: 46fps (ES 3.1 onscreen)-

ZTE nubia Red Magic 5G

  • Superior gaming performance due to active cooling.
  • Extremely fast 55W wired charging.
  • Long battery endurance (83h rating).

  • Limited camera details and likely lower image quality.
  • Lack of wireless charging and reverse wireless charging.

Samsung Galaxy S20 Ultra

  • Versatile and high-quality camera system.
  • Vibrant display with potentially superior color accuracy.
  • Wireless charging and reverse wireless charging capabilities.

  • Potential for thermal throttling with the Exynos variant.
  • Slower wired charging compared to the Red Magic 5G.

Display Comparison

Both devices utilize 7nm+ fabrication, but diverge significantly in display priorities. While the S20 Ultra boasts a higher resolution and likely greater peak brightness (based on Samsung's display expertise), the Red Magic 5G prioritizes a high refresh rate for smoother gaming. The Red Magic 5G's 'Infinite' contrast ratio suggests a focus on deep blacks, potentially utilizing an AMOLED panel, but lacks specific details on peak brightness or color accuracy. The S20 Ultra's display is likely to offer superior color calibration and HDR support, catering to media consumption. The S20 Ultra also benefits from Samsung's display technology, potentially including LTPO for variable refresh rate and power efficiency.

Camera Comparison

The S20 Ultra's camera system is significantly more complex and versatile. While the Red Magic 5G offers photo/video capabilities, details are sparse. The S20 Ultra's strength lies in its large sensor, advanced image processing, and multiple lenses (including telephoto for significant zoom capabilities). The S20 Ultra's OIS is crucial for stable video recording and low-light photography. The Red Magic 5G likely focuses on adequate camera performance for casual use, while the S20 Ultra targets enthusiasts and professionals. The S20 Ultra's 108MP sensor dwarfs any expected sensor on the Red Magic 5G, offering superior detail and dynamic range.

Performance

Both phones can be configured with the Qualcomm Snapdragon 865 5G (7nm+), but the S20 Ultra also offered an Exynos 990 variant. The Red Magic 5G's consistent use of the Snapdragon 865 provides a performance baseline, while the S20 Ultra's Exynos version has historically faced thermal throttling concerns. The Red Magic 5G's active cooling system – a key differentiator – is designed to mitigate throttling, allowing for sustained peak performance during extended gaming sessions. The CPU configurations are similar, with the Red Magic 5G utilizing a Cortex-A77 prime core clocked at 2.84GHz, while the S20 Ultra's Snapdragon variant matches this. However, the Red Magic 5G's thermal design gives it an edge in maintaining those clock speeds.

Battery Life

The Red Magic 5G boasts a remarkable 55W wired charging capability, achieving 56% charge in 15 minutes and 100% in 40 minutes. The S20 Ultra offers 45W wired charging, slower than the Red Magic 5G. The S20 Ultra adds 15W wireless charging and 4.5W reverse wireless charging, features absent on the Red Magic 5G. The Red Magic 5G's endurance rating of 83 hours suggests excellent battery life, likely due to its focus on gaming optimization and potentially a larger battery capacity (though not specified). The S20 Ultra's battery life is good, but the Red Magic 5G's faster charging and potentially larger capacity give it an advantage for heavy users.

Buying Guide

Buy the ZTE nubia Red Magic 5G if you prioritize sustained gaming performance, require fast charging, and appreciate a design focused on minimizing heat. Buy the Samsung Galaxy S20 Ultra if you value a versatile camera system, a vibrant display with broader content support, and a more refined software experience with features like wireless charging and reverse wireless charging.

Frequently Asked Questions

❓ Does the Exynos 990 in the S20 Ultra suffer from overheating during prolonged gaming sessions?
Yes, the Exynos 990 variant of the S20 Ultra was known to experience thermal throttling under sustained load, particularly during demanding games. This resulted in reduced performance over time. The Snapdragon 865 variant fared better, but the Red Magic 5G's active cooling system provides a more consistent gaming experience regardless.
❓ Is the 2MP macro camera on the S20 Ultra actually useful for taking detailed close-up photos?
While present, the 2MP macro camera on the S20 Ultra is often considered a marketing feature rather than a genuinely useful tool. Its low resolution limits detail, and image quality is often subpar compared to using the main sensor with digital zoom. It's unlikely to be a primary reason for choosing the S20 Ultra.
❓ Can the ZTE nubia Red Magic 5G maintain a stable 90fps in graphically intensive games like PUBG?
Yes, the Red Magic 5G is specifically designed to maintain high frame rates in demanding games like PUBG. Its Snapdragon 865 chipset and active cooling system work in tandem to prevent throttling and deliver a consistently smooth gaming experience, often exceeding 90fps with optimized settings.
❓ How does the Red Magic 5G's cooling system actually work, and is it noisy?
The Red Magic 5G utilizes an internal fan and vapor chamber cooling system. The fan actively draws heat away from the Snapdragon 865, dissipating it through vents on the device. While the fan is audible under heavy load, it's generally not excessively loud and is a worthwhile trade-off for sustained performance. The fan speed is also adjustable.