Sony Xperia 1 II vs OnePlus 9 Pro: A Detailed Flagship Comparison

The Sony Xperia 1 II and OnePlus 9 Pro represent distinct approaches to the flagship Android experience. The Xperia 1 II, released in 2020, prioritized a creator-focused experience with a unique aspect ratio and professional video features. The OnePlus 9 Pro, arriving in 2021, aimed for a more mainstream appeal with a faster chipset and aggressive charging speeds. This comparison dissects their strengths and weaknesses to help you decide which remains a viable option today.
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🏆 Quick Verdict

For most users, the OnePlus 9 Pro emerges as the better choice. Its newer Snapdragon 888 chipset, significantly faster charging (65W vs 21W), and brighter display offer a more modern and convenient experience. However, the Xperia 1 II still holds appeal for videographers and those valuing a unique, elongated display.

PHONES
Phone Names Sony Xperia 1 II OnePlus 9 Pro
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 19, 20, 25, 26, 28, 29, 32, 34, 38, 39, 40, 41, 46, 661, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - EU
5G bands1, 3, 28, 77, 78 NSA/Sub61, 3, 5, 7, 8, 20, 28, 38, 40, 41, 66, 78 SA/NSA - EU
SpeedHSPA 42.2/5.76 Mbps, LTE (6CA) Cat19 1600/150 Mbps, 5G (2+ Gbps DL)HSPA 42.2/5.76 Mbps, LTE Cat20 2000/200 Mbps, 5G
TechnologyGSM / HSPA / LTE / 5GGSM / CDMA / HSPA / LTE / 5G
 -1, 3, 28, 41, 78, 79 SA/NSA - CN
Launch
Announced2020, February 242021, March 23
StatusAvailable. Released 2020, May 22Available. 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
Dimensions165.1 x 71.1 x 7.6 mm (6.5 x 2.80 x 0.30 in)163.2 x 73.6 x 8.7 mm (6.43 x 2.90 x 0.34 in)
SIMNano-SIM + Nano-SIM· Nano-SIM· Nano-SIM + Nano-SIM
Weight181.4 g (6.38 oz)197 g (6.95 oz)
 IP65/IP68 dust/water resistant (up to 1.5m for 30 mins)IP68 dust/water resistant (up to 1.5m for 30 min)
Display
ProtectionCorning Gorilla Glass 6Corning Gorilla Glass 5
Resolution1644 x 3840 pixels, 21:9 ratio (~643 ppi density)1440 x 3216 pixels, 20:9 ratio (~525 ppi density)
Size6.5 inches, 98.6 cm2 (~84.0% screen-to-body ratio)6.7 inches, 108.4 cm2 (~90.3% screen-to-body ratio)
TypeOLED, 1B colors, HDR BT.2020LTPO Fluid2 AMOLED, 1B colors, 120Hz, HDR10+, 1300 nits (peak)
 Runs at 1096 x 2560 pixels except for select use casesAlways-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, upgradable to Android 12Android 11, upgradable to Android 14, OxygenOS 14
Memory
Card slotmicroSDXC (uses shared SIM slot)No
Internal256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM
 UFS 3.0UFS 3.1
Main Camera
FeaturesZeiss optics, color spectrum sensor, LED flash, panorama, HDR, eye trackingLaser 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/1.7, 24mm (wide), 1/1.7", 1.8µm, dual pixel PDAF, OIS 12 MP, f/2.4, 70mm (telephoto), 1/3.4", 1.0µm, PDAF, 3x optical zoom, OIS 12 MP, f/2.2, 124˚, 16mm (ultrawide), 1/2.55", dual pixel PDAF 0.3 MP, TOF 3D, (depth)-
Video4K@24/25/30/60/120fps HDR, 1080p@30/60/120fps; 5-axis gyro-EIS, OIS8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS
Selfie camera
FeaturesHDRHDR
Single8 MP, f/2.0, 24mm (wide), 1/4.0", 1.12µm16 MP, f/2.4, (wide), 1/3.06", 1.0µm
Video1080p@30fps (5-axis gyro-EIS)1080p@30fps, gyro-EIS
Sound
3.5mm jack YesNo
35mm jackYesNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 24-bit/192kHz audio Dynamic vibration system24-bit/192kHz audio
Comms
Bluetooth5.1, A2DP, aptX HD, LE5.2, A2DP, LE, aptX HD
NFCYesYes
PositioningGPS, GLONASS, BDS, GALILEOGPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)
RadioNoNo
USBUSB Type-C 3.1, OTGUSB Type-C 3.1, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, DLNAWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, DLNA
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, barometer, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Battery
Charging21W wired, PD 11W wireless65W wired, PD, 100% in 29 min 50W wireless, 100% in 43 min 5W reverse wireless
TypeLi-Po 4000 mAhLi-Po 4500 mAh
Misc
ColorsBlack, Purple, Mirror Lake GreenMorning Mist, Forest Green, Stellar Black
ModelsXQ-AT51, XQ-AT52, SOG01, XQ-AT42LE2121, LE2125, LE2123, LE2120, LE2127
PriceAbout 700 EUR€ 246.17 / $ 264.95 / £ 287.00
Tests
Battery lifeEndurance rating 83h Endurance rating 86h
Camera Photo / Video Photo / Video
Display Contrast ratio: Infinite (nominal)-
Loudspeaker -27.3 LUFS (Good) -24.1 LUFS (Very good)
Performance AnTuTu: 534701 (v8) GeekBench: 3295 (v5.1) GFXBench: 39fps (ES 3.1 onscreen)-

Sony Xperia 1 II

  • Unique 21:9 aspect ratio display
  • Strong video recording capabilities
  • Understated and professional design

  • Slower Snapdragon 865 chipset
  • Significantly slower charging speeds
  • Lower display brightness

OnePlus 9 Pro

  • Faster Snapdragon 888 chipset
  • Significantly faster wired and wireless charging
  • Brighter and more color-accurate display

  • More conventional design
  • Potential for software bloat (OnePlus history)
  • May not appeal to users seeking a unique aspect ratio

Display Comparison

The OnePlus 9 Pro boasts a significantly brighter display, reaching 859 nits compared to the Xperia 1 II’s 611 nits. This translates to superior visibility under direct sunlight. While both feature OLED technology, the OnePlus 9 Pro’s higher peak brightness and likely wider color gamut (though not specified) provide a more vibrant and engaging viewing experience. The Xperia 1 II’s 21:9 aspect ratio, while unique, can present compatibility issues with some apps and content, whereas the OnePlus 9 Pro’s more conventional ratio offers broader support. Contrast ratios are nominally infinite on both, typical of OLED panels.

Camera Comparison

Both phones offer versatile camera systems, but differ in their approach. While detailed sensor specs are missing, the OnePlus 9 Pro’s collaboration with Hasselblad suggests a focus on color science and image processing. The Snapdragon 888’s improved ISP (Image Signal Processor) also contributes to better image quality. The Xperia 1 II, known for its video capabilities, likely excels in that area, offering manual controls and professional features. However, the OnePlus 9 Pro’s faster processor and potentially larger main sensor (based on market positioning) likely provide superior low-light performance and faster image processing. The absence of detailed sensor information prevents a definitive camera winner.

Performance

The OnePlus 9 Pro’s Snapdragon 888 (5nm) represents a generational leap over the Xperia 1 II’s Snapdragon 865 (7nm+). The 5nm process node delivers improved power efficiency and thermal performance, allowing the 888 to sustain higher clock speeds for longer periods. The CPU architecture also differs; the OnePlus 9 Pro utilizes a Cortex-X1 prime core, offering a performance advantage over the Xperia 1 II’s Cortex-A77 prime core. While both phones feature 8GB or 12GB of RAM, the OnePlus 9 Pro benefits from faster LPDDR5 RAM, further enhancing responsiveness. This translates to snappier app loading times and smoother multitasking on the OnePlus 9 Pro.

Battery Life

Both phones achieve similar endurance ratings (86h for OnePlus 9 Pro vs 83h for Xperia 1 II), despite the Xperia 1 II potentially having a larger battery capacity (not specified). This suggests the OnePlus 9 Pro’s more efficient Snapdragon 888 chipset offsets any capacity difference. 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 Xperia 1 II’s 21W charging takes considerably longer. The OnePlus 9 Pro also offers 50W wireless charging and 5W reverse wireless charging, features absent on the Xperia 1 II. This makes the OnePlus 9 Pro significantly more convenient for users who frequently need to top up their battery.

Buying Guide

Buy the Sony Xperia 1 II if you are a content creator prioritizing video recording capabilities, appreciate a 21:9 aspect ratio display for multitasking, and value a more understated design. Buy the OnePlus 9 Pro if you prioritize fast charging, a brighter and more color-accurate display, and the latest processor for demanding tasks and gaming. The OnePlus 9 Pro is the better all-rounder for the average user.

Frequently Asked Questions

❓ Does the Snapdragon 888 in the OnePlus 9 Pro suffer from overheating issues during prolonged gaming?
While the Snapdragon 888 was known to run warmer than its predecessor, the OnePlus 9 Pro incorporates a robust cooling system, including vapor chamber cooling, to mitigate thermal throttling. User reports suggest that while the phone can get warm during extended gaming sessions, performance remains largely consistent.
❓ Is the 21:9 aspect ratio of the Sony Xperia 1 II practical for everyday use, or does it cause compatibility issues?
The 21:9 aspect ratio is excellent for multitasking and viewing content designed for cinematic formats. However, it can lead to letterboxing (black bars) in some apps and videos not optimized for this ratio. Some apps may not scale properly, resulting in a less-than-ideal user experience.
❓ How does the OnePlus 9 Pro's Hasselblad color calibration affect image quality compared to Sony's image processing?
The OnePlus 9 Pro's Hasselblad partnership focuses on natural color reproduction and improved dynamic range. While Sony's image processing tends to be more vibrant and saturated, Hasselblad aims for a more realistic and accurate representation of colors. This difference caters to different user preferences.
❓ Given the age of the Xperia 1 II, are software updates still being provided?
Sony typically provides a limited number of major Android updates for its flagship devices. As of late 2023/early 2024, the Xperia 1 II has likely received its final major Android update. Security patches may continue for a period, but long-term software support is limited compared to the OnePlus 9 Pro.