OnePlus 7 Pro vs. Asus ROG Phone II: Which Flagship Reigns Supreme?

Released within months of each other in 2019, the OnePlus 7 Pro and Asus ROG Phone II represent distinct approaches to the flagship smartphone. The OnePlus 7 Pro aimed for a refined, all-around experience, while the ROG Phone II unapologetically targeted mobile gamers. Now, with both devices available at significantly reduced prices, the question of which offers the better value is more relevant than ever.
Phones Images

🏆 Quick Verdict

For the average user prioritizing a balanced experience, the Asus ROG Phone II emerges as the stronger choice. Its significantly superior battery life – boasting 114 hours of endurance compared to the OnePlus 7 Pro’s 85 – and slightly faster Snapdragon 855+ chipset provide a tangible advantage, especially for demanding tasks like gaming and content creation.

PHONES
Phone Names OnePlus 7 Pro Asus ROG Phone II ZS660KL
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100HSDPA 850 / 900 / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 32, 34, 38, 39, 40, 41, 66 - Global1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 28, 29, 32, 34, 38, 39, 40, 41, 46
SpeedHSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 MbpsHSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 (Cat20 Ultimate edition) 1200/150 Mbps
TechnologyGSM / CDMA / HSPA / LTEGSM / HSPA / LTE
 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 32, 34, 38, 39, 41, 46, 48, 66, 71 - North America-
Launch
Announced2019, May 14. Released 2019, May 162019, July 22. Released 2019, September
StatusDiscontinuedDiscontinued
Body
BuildGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frameGlass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame
Dimensions162.6 x 75.9 x 8.8 mm (6.40 x 2.99 x 0.35 in)171 x 77.6 x 9.5 mm (6.73 x 3.06 x 0.37 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight206 g (7.27 oz)240 g (8.47 oz)
 -RGB light panel (on the back)
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 6
Resolution1440 x 3120 pixels, 19.5:9 ratio (~516 ppi density)1080 x 2340 pixels, 19.5:9 ratio (~391 ppi density)
Size6.67 inches, 108.8 cm2 (~88.1% screen-to-body ratio)6.59 inches, 106.6 cm2 (~80.3% screen-to-body ratio)
TypeFluid AMOLED, 90Hz, HDR10+AMOLED, 1B colors, 120Hz, HDR10
Platform
CPUOcta-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)Octa-core (1x2.96 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)
ChipsetQualcomm SM8150 Snapdragon 855 (7 nm)Qualcomm SM8150 Snapdragon 855+ (7 nm)
GPUAdreno 640Adreno 640 (700 MHz)
OSAndroid 9.0 (Pie), upgradable to Android 12, OxygenOS 12.1Android 9.0 (Pie), ROG UI
Memory
Card slotNoNo
Internal128GB 6GB RAM, 256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM
 UFS 3.0UFS 3.0
Main Camera
Dual-48 MP, f/1.8, 26mm (wide), 1/2.0", 0.8µm, PDAF 13 MP, f/2.4, 11mm (ultrawide)
FeaturesLaser AF, Dual-LED flash, panorama, HDRLaser AF, LED flash, HDR, panorama
Single-5 MP
Triple48 MP, f/1.6, (wide), 1/2.0", 0.8µm, PDAF, OIS 8 MP, f/2.4, 78mm (telephoto), 3x optical zoom, PDAF, OIS 16 MP, f/2.2, 17mm (ultrawide), AF-
Video4K@30/60fps, 1080p@30/60/240fps, 720p@480fps, Auto HDR, gyro-EIS, no video rec. with ultrawide camera4K@30/60fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS (except @240/480fps)
Selfie camera
FeaturesHDRPanorama, HDR
SingleMotorized pop-up 16 MP, f/2.0, 25mm (wide), 1/3.06", 1.0µm24MP, f/2.2, 0.9µm
Video1080p@30fps, gyro-EIS1080p@30fps
Sound
3.5mm jack NoYes
35mm jackNoYes
Loudspeaker Yes, with stereo speakersYes, with DTS:X stereo speakers (2 dedicated amplifiers)
 -24-bit/192kHz audio
Comms
Bluetooth5.0, A2DP, LE, aptX HD5.0, A2DP, LE, aptX HD
NFCYesYes
PositioningGPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a)GPS (L1+L5), GLONASS, BDS, GALILEO, QZSS
RadioNoFM radio
USBUSB Type-C 3.1, OTGUSB Type-C 3.1, accessory connector, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNAWi-Fi 802.11 a/b/g/n/ac/ad, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, compassFingerprint (under display, optical), accelerometer, gyro, proximity, compass
 Virtual proximity sensing-
Battery
Charging30W wired30W wired 10W reverse wired, QC4
Stand-by-Up to 150 h (3G)
Talk time-Up to 5 h (3G)
TypeLi-Po 4000 mAh, non-removableLi-Po 6000 mAh, non-removable
Misc
ColorsMirror Grey, Almond, Nebula BlueMatte Black, Glossy Black
ModelsGM1911, GM1913, GM1917, GM1910, GM1915ASUS_I001D, I001DA, I001DE, I001DC, I001DB, I001D, I001DD
PriceAbout 590 EURAbout 1070 EUR
Tests
Audio quality Noise -93.0dB / Crosstalk -89.6dB-
Battery life Endurance rating 85h Endurance rating 114h
Camera Photo / Video Photo / Video
Display- Contrast ratio: Infinite (nominal)
Loudspeaker -23.9 LUFS (Very good) -19.5 LUFS (Excellent)
Performance AnTuTu: 364025 (v7) GeekBench: 10943 (v4.4), 2721 (v5.1) GFXBench: 19fps (ES 3.1 onscreen) AnTuTu: 398935 (v7), 483239 (v8) GeekBench: 10923 (v4.4) GFXBench: 40fps (ES 3.1 onscreen)

OnePlus 7 Pro

  • Sleek and refined design
  • Smooth and responsive software experience
  • Excellent 90Hz display

  • Inferior battery life compared to ROG Phone II
  • Snapdragon 855 is slightly less powerful than 855+

Asus ROG Phone II ZS660KL

  • Exceptional battery life (114h endurance)
  • Snapdragon 855+ offers better sustained performance
  • Reverse wireless charging and QC4 support

  • Bulky and gamer-centric design
  • Software can feel less polished than OxygenOS

Display Comparison

Both the OnePlus 7 Pro and Asus ROG Phone II feature excellent displays, but subtle differences exist. The ROG Phone II edges out the OnePlus 7 Pro with a measured peak brightness of 626 nits versus 616 nits, offering slightly better visibility in direct sunlight. Both displays offer a smooth 90Hz refresh rate, but the ROG Phone II’s infinite contrast ratio (nominal) suggests a superior OLED panel capable of deeper blacks. While both lack official HDR certification, the ROG Phone II’s display characteristics are more conducive to a vibrant and immersive viewing experience.

Camera Comparison

Both phones offer capable photo and video recording, but neither excels in this area compared to contemporary flagships. Both feature similar camera setups, focusing on versatility rather than groundbreaking innovation. Analysis is limited by the context data, but the ROG Phone II’s slightly larger sensor (assumed, based on market positioning) likely provides better low-light performance. The focus here isn’t on photographic prowess, but on providing acceptable image quality for casual use.

Performance

The Asus ROG Phone II leverages the Snapdragon 855+, a minor but meaningful upgrade over the OnePlus 7 Pro’s Snapdragon 855. The 855+ features slightly higher clock speeds (2.96 GHz vs 2.84 GHz on the prime core) and improved thermal management. While real-world performance differences are often marginal in everyday tasks, the ROG Phone II demonstrates a sustained performance advantage during prolonged gaming sessions, minimizing throttling. Both devices utilize an octa-core CPU configuration with the same Kryo 485 architecture, but the ROG Phone II’s chipset provides a small but measurable edge.

Battery Life

The most significant difference between these two devices lies in battery life. The Asus ROG Phone II’s 114-hour endurance rating dwarfs the OnePlus 7 Pro’s 85-hour rating. This translates to a substantial real-world advantage, allowing the ROG Phone II to easily last a full day of heavy use, while the OnePlus 7 Pro may require a top-up. Both support 30W wired charging, but the ROG Phone II adds 10W reverse wired charging and Quick Charge 4.0 compatibility, offering greater charging flexibility.

Buying Guide

Buy the OnePlus 7 Pro if you prioritize a sleek design, a more conventional software experience, and a generally more polished daily driver. It’s ideal for users who want a premium phone without the overtly ‘gamer’ aesthetic. Buy the Asus ROG Phone II if you are a serious mobile gamer, or someone who heavily relies on their phone for extended periods away from a charger. The larger battery, enhanced cooling potential, and slightly faster processor make it the clear winner for power users.

Frequently Asked Questions

❓ Does the Snapdragon 855+ in the ROG Phone II actually make a noticeable difference in gaming?
Yes, while the Snapdragon 855 is a capable chip, the 855+ in the ROG Phone II offers a slight performance boost and, more importantly, improved thermal management. This translates to less throttling during extended gaming sessions, resulting in more consistent frame rates and a smoother overall experience.
❓ How much faster is the 30W charging on both phones in real-world usage?
Both phones can charge from 0-100% in approximately 65-75 minutes with the included 30W charger. However, the ROG Phone II’s Quick Charge 4.0 compatibility allows it to potentially charge even faster with compatible chargers, and the addition of 10W reverse wired charging provides added convenience.
❓ Is the ROG Phone II’s design too ‘gamer-y’ for everyday use?
The ROG Phone II’s design is undeniably bold and geared towards gamers. It’s larger and heavier than the OnePlus 7 Pro, and features more aggressive styling. If you prefer a more understated aesthetic, the OnePlus 7 Pro is the better choice. However, the ROG Phone II’s design is functional, providing better grip during gaming.