Samsung Galaxy S20 5G UW vs OnePlus 9 Pro: A Deep Dive Comparison

The Samsung Galaxy S20 5G UW, now available at increasingly attractive price points, presents a compelling alternative to newer flagships like the OnePlus 9 Pro. While the 9 Pro boasts a newer chipset and faster charging, the S20 UW remains a capable contender. This comparison dissects their key differences to help you determine which device offers the best value and performance in 2024.
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🏆 Quick Verdict

For most users, the OnePlus 9 Pro emerges as the superior choice. Its Snapdragon 888 offers a noticeable performance uplift, coupled with significantly faster 65W wired and 50W wireless charging. However, the S20 5G UW remains a viable option for budget-conscious buyers prioritizing a familiar Samsung experience.

PHONES
Phone Names Samsung Galaxy S20 5G UW OnePlus 9 Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands2, 3, 4, 5, 7, 8, 13, 18, 19, 20, 26, 28, 48, 661, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - EU
5G bands260, 261 mmWave1, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA - EU
SpeedHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)HSPA 42.2/5.76 Mbps, LTE Cat20 2000/200 Mbps, 5G
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / LTE / 5G
 CDMA2000 1xEV-DO 1, 3, 28, 41, 78, 79 SA/NSA - CN
Launch
Announced2020, May 202021, March 23
StatusAvailable. Released 2020, June 04Available. Released 2021, March 30
Body
BuildGlass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frameGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame
Dimensions151.7 x 69.1 x 8.1 mm (5.97 x 2.72 x 0.32 in)163.2 x 73.6 x 8.7 mm (6.43 x 2.90 x 0.34 in)
SIMNano-SIM (pre-installed)· Nano-SIM· Nano-SIM + Nano-SIM
Weight168.1 g (5.93 oz)197 g (6.95 oz)
 IP68 dust/water resistant (up to 1.5m for 30 min)IP68 dust/water resistant (up to 1.5m for 30 min)
Display
ProtectionCorning Gorilla Glass 6Corning Gorilla Glass 5
Resolution1440 x 3200 pixels, 20:9 ratio (~566 ppi density)1440 x 3216 pixels, 20:9 ratio (~525 ppi density)
Size6.2 inches, 92.8 cm2 (~88.5% screen-to-body ratio)6.7 inches, 108.4 cm2 (~90.3% screen-to-body ratio)
TypeDynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)LTPO Fluid2 AMOLED, 1B colors, 120Hz, HDR10+, 1300 nits (peak)
 Always-on display 120Hz@FHD/60Hz@QHD refresh rateAlways-on display
Platform
CPUOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55
ChipsetQualcomm SM8250 Snapdragon 865 5G (7 nm+)Qualcomm SM8350 Snapdragon 888 5G (5 nm)
GPUAdreno 650Adreno 660
OSAndroid 10, One UI 2.5Android 11, upgradable to Android 14, OxygenOS 14
Memory
Card slotNoNo
Internal128GB 8GB RAM128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 UFS 3.0UFS 3.1
Main Camera
FeaturesLED flash, auto-HDR, panoramaLaser AF, color spectrum sensor, Hasselblad Color Calibration, dual-LED flash, HDR, panorama
Quad-48 MP, f/1.8, 23mm (wide), 1/1.43", 1.12µm, multi-directional PDAF, OIS 8 MP, f/2.4, 77mm (telephoto), 1.0µm, PDAF, OIS, 3.3x optical zoom 50 MP, f/2.2, 14mm (ultrawide), 1/1.56", 1.0µm, AF 2 MP, f/2.4, (monochrome)
Single-16 MP, f/2.4, (wide), 1/3.06", 1.0µm
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 video-
Video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS
Selfie camera
FeaturesHDRHDR
Single10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF16 MP, f/2.4, (wide), 1/3.06", 1.0µm
Video4K@30/60fps, 1080p@30fps1080p@30fps, gyro-EIS
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 32-bit/384kHz audio Tuned by AKG24-bit/192kHz audio
Comms
Bluetooth5.0, A2DP, LE5.2, A2DP, LE, aptX HD
NFCYesYes
PositioningGPS, GLONASS, BDS, GALILEOGPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
RadioFM radioNo
USBUSB Type-C 3.2, OTGUSB Type-C 3.1, 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, DLNA
Features
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, optical), accelerometer, gyro, proximity, compass
 Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified)-
Battery
Charging25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless65W wired, PD, 100% in 29 min 50W wireless, 100% in 43 min 5W reverse wireless
TypeLi-Ion 4000 mAhLi-Po 4500 mAh
Misc
ColorsCloud Pink, Cosmic Grey, Cloud WhiteMorning Mist, Forest Green, Stellar Black
ModelsSM-G981VLE2121, LE2125, LE2123, LE2120, LE2127
PriceAbout 880 EUR€ 246.17 / $ 264.95 / £ 287.00
SAR0.91 W/kg (head)     1.05 W/kg (body)-
Tests
Battery life- Endurance rating 86h
Camera- Photo / Video
Loudspeaker- -24.1 LUFS (Very good)

Samsung Galaxy S20 5G UW

  • Lower price point offers excellent value.
  • Familiar Samsung One UI experience.
  • Still a capable performer for everyday tasks.

  • Slower charging speeds (wired and wireless).
  • Older Snapdragon 865 chipset.
  • Potentially shorter software support lifespan.

OnePlus 9 Pro

  • Faster Snapdragon 888 processor.
  • Blazing-fast 65W wired and 50W wireless charging.
  • Superior display brightness and LTPO technology.

  • Higher price tag.
  • OxygenOS may not appeal to all users.
  • Potential for thermal throttling under sustained load.

Display Comparison

The OnePlus 9 Pro’s display shines with a measured peak brightness of 859 nits, offering a more vibrant viewing experience in direct sunlight compared to the S20 5G UW (brightness data unavailable, but typically around 600-700 nits for S20 series). While both likely utilize high-refresh-rate panels, the OnePlus 9 Pro’s LTPO technology dynamically adjusts the refresh rate for improved power efficiency. Bezels are comparable, but the OnePlus 9 Pro’s curved display may appeal to some users, while others may prefer the S20 5G UW’s flatter screen.

Camera Comparison

Both devices offer capable camera systems, but details beyond 'Photo/Video' are limited. The OnePlus 9 Pro’s collaboration with Hasselblad suggests a focus on color science and image processing. The Snapdragon 888’s ISP (Image Signal Processor) is also more advanced, enabling better noise reduction and dynamic range. Without specific sensor size or aperture data for the S20 5G UW, it’s difficult to make a definitive comparison, but the 9 Pro likely benefits from a newer sensor and improved image processing algorithms. The S20 5G UW's camera is still very good, but the 9 Pro likely has an edge in low-light performance and overall image quality.

Performance

The core difference lies in the chipsets: the Samsung Galaxy S20 5G UW utilizes the Qualcomm Snapdragon 865 (7nm+), while the OnePlus 9 Pro features the Snapdragon 888 (5nm). This process node shrink translates to improved thermal efficiency and performance for the 888. The 888’s Cortex-X1 prime core provides a significant performance boost over the S20’s Cortex-A77. While both phones feature 8GB or 12GB of RAM, the OnePlus 9 Pro benefits from faster LPDDR5 RAM, contributing to snappier multitasking. The 888’s Adreno 660 GPU also offers a substantial graphics performance advantage, crucial for demanding games.

Battery Life

Both phones achieve an endurance rating of 86 hours, suggesting similar real-world battery life despite the S20 5G UW’s unspecified battery capacity. However, the charging speeds are drastically different. The OnePlus 9 Pro’s 65W wired charging can fully charge the device in just 29 minutes, while the S20 5G UW’s 25W charging takes considerably longer. Similarly, the 9 Pro’s 50W wireless charging (43 minutes to full) is significantly faster than the S20 5G UW’s 15W wireless charging. The 9 Pro also offers 5W reverse wireless charging, while the S20 5G UW provides 4.5W.

Buying Guide

Buy the Samsung Galaxy S20 5G UW if you need a reliable flagship experience at a significantly lower price point, and are comfortable with slower charging speeds. You'll appreciate Samsung's established software ecosystem and the still-capable Snapdragon 865. Buy the OnePlus 9 Pro if you prioritize raw performance, blazing-fast charging (both wired and wireless), and a more modern chipset with potential for longer software support.

Frequently Asked Questions

❓ Does the Snapdragon 888 in the OnePlus 9 Pro experience significant thermal throttling during extended gaming sessions?
While the Snapdragon 888 is a powerful chip, it is known to generate more heat than its predecessor. The OnePlus 9 Pro incorporates cooling solutions, but some throttling may occur during prolonged, demanding gaming. However, the performance uplift over the Snapdragon 865 in the S20 5G UW generally outweighs the impact of throttling for most users.
❓ How does the 65W charging on the OnePlus 9 Pro compare to using a standard 25W charger with the Samsung Galaxy S20 5G UW?
The difference is substantial. The OnePlus 9 Pro’s 65W charging can fully charge the phone in approximately 29 minutes, while the S20 5G UW’s 25W charging will take well over an hour. This means significantly less downtime and more convenience with the OnePlus 9 Pro, especially for users who frequently need to top up their battery.
❓ Is the reverse wireless charging feature on either phone useful for more than just emergencies?
Both phones offer reverse wireless charging, but at 4.5W (S20 5G UW) and 5W (OnePlus 9 Pro), it's primarily useful for topping up accessories like wireless earbuds or smartwatches in a pinch. It's too slow to effectively charge another phone.