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

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

For the average user prioritizing a balanced experience, the Asus ROG Phone II emerges as the stronger choice. Its 114-hour endurance rating, coupled with 30W wired charging and the addition of 10W reverse wireless charging, provides a significant advantage over the OnePlus 7T Pro’s 100-hour rating. While both share the same Snapdragon 855+ chipset, the ROG Phone II’s gaming-focused features and superior battery life make it the better pick.

PHONES
Phone Names OnePlus 7T 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, 661, 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
 CDMA 800 / 1900 & TD-SCDMA-
Launch
Announced2019, October 102019, July 22. Released 2019, September
StatusAvailable. Released 2019, October 12Discontinued
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 (1x2.96 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 640 (700 MHz)Adreno 640 (700 MHz)
OSAndroid 10, upgradable to Android 12, OxygenOS 12.1Android 9.0 (Pie), ROG UI
Memory
Card slotNoNo
Internal256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 256GB 12GB RAM, 512GB 12GB RAM, 1TB 12GB RAM
 12GB RAM - McLaren Edition only 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, HDR, panoramaLaser 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@960fps, Auto HDR, gyro-EIS4K@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 4085 mAh, non-removableLi-Po 6000 mAh, non-removable
Misc
ColorsHaze Blue, McLaren EditionMatte Black, Glossy Black
ModelsHD1911, HD1913, HD1910ASUS_I001D, I001DA, I001DE, I001DC, I001DB, I001D, I001DD
PriceAbout 1030 EURAbout 1070 EUR
Tests
Audio quality Noise -93.7dB / Crosstalk -91.0dB-
Battery life Endurance rating 100h Endurance rating 114h
Camera Photo / Video Photo / Video
Display Contrast ratio: Infinite (nominal) Contrast ratio: Infinite (nominal)
Loudspeaker Voice 90dB / Noise 75dB / Ring 82dB -19.5 LUFS (Excellent)
Performance AnTuTu: 395868 (v7), 493901 (v8) GeekBench: 11246 (v4.4), 2803 (v5.1) GFXBench: 24fps (ES 3.1 onscreen) AnTuTu: 398935 (v7), 483239 (v8) GeekBench: 10923 (v4.4) GFXBench: 40fps (ES 3.1 onscreen)

OnePlus 7T Pro

  • Sleek and refined design
  • Smooth user experience (OxygenOS)
  • Potentially better camera image processing

  • Lower battery endurance (100h)
  • No reverse wireless charging
  • Lower display brightness

Asus ROG Phone II ZS660KL

  • Superior battery life (114h)
  • Brighter display (626 nits)
  • Reverse wireless charging and QC4 support

  • Larger and bulkier design
  • Gaming-focused aesthetics may not appeal to everyone
  • Potentially less refined camera experience

Display Comparison

Both devices feature displays with an 'Infinite' (nominal) contrast ratio, suggesting excellent black levels. However, the Asus ROG Phone II distinguishes itself with a measured peak brightness of 626 nits, significantly exceeding what’s available on the OnePlus 7T Pro. This brighter display translates to better visibility in direct sunlight, a crucial benefit for outdoor gaming. While both likely utilize AMOLED technology, the ROG Phone II’s higher brightness provides a more vibrant and usable experience in various lighting conditions. The lack of refresh rate data for both phones means we can't compare smoothness, but both were considered high-end for their time.

Camera Comparison

Both phones offer 'Photo / Video' capabilities, but detailed camera specifications are absent. Given the ROG Phone II’s gaming focus, it’s reasonable to assume the OnePlus 7T Pro may have prioritized camera quality slightly more. However, without sensor size, aperture, or image processing details, a definitive comparison is impossible. The absence of information suggests neither phone was a standout in the camera department compared to other flagships of the era.

Performance

Both the OnePlus 7T Pro and Asus ROG Phone II are powered by the Qualcomm SM8150 Snapdragon 855+ (7 nm) chipset, featuring an identical octa-core CPU configuration. This means raw processing power will be nearly indistinguishable between the two. However, the ROG Phone II’s larger chassis and more robust cooling system likely allow it to sustain peak performance for longer periods, mitigating potential thermal throttling during extended gaming sessions. While both utilize the same chipset, the ROG Phone II’s thermal design gives it an edge in sustained performance.

Battery Life

The Asus ROG Phone II boasts a clear advantage in battery endurance, achieving a rating of 114 hours compared to the OnePlus 7T Pro’s 100 hours. This 14-hour difference translates to a noticeable improvement in real-world usage, particularly for power users and gamers. Both support 30W wired charging, but the ROG Phone II adds the convenience of 10W reverse wired charging and Quick Charge 4 (QC4) compatibility, allowing it to charge other devices. This versatility is a significant benefit for users who frequently travel or rely on multiple devices.

Buying Guide

Buy the OnePlus 7T Pro if you need a sleek, refined flagship with a smooth user experience and prioritize a more understated design. It’s ideal for users who value a balance of features and don’t require the specialized gaming extras. Buy the Asus ROG Phone II ZS660KL if you prioritize extended gaming sessions, demand maximum battery life, and appreciate features like reverse wireless charging and a brighter display. This phone is built for power users and mobile gaming enthusiasts.

Frequently Asked Questions

❓ Does the Snapdragon 855+ in the ROG Phone II suffer from significant thermal throttling during prolonged gaming?
While the Snapdragon 855+ is known to generate heat, the ROG Phone II’s larger chassis and more advanced cooling system are designed to mitigate throttling. Users report sustained performance for extended gaming sessions, exceeding what’s typically achievable on devices with more compact designs like the OnePlus 7T Pro.
❓ Is the 10W reverse wireless charging on the ROG Phone II useful for charging accessories like earbuds?
Yes, the 10W reverse wireless charging is a convenient feature for topping up accessories like wireless earbuds or smartwatches. While not as fast as dedicated chargers, it provides a practical solution for keeping smaller devices powered on the go, especially during travel.
❓ Given both phones are older models, are software updates still available?
Software update support for both devices is limited. While both initially received updates, they are unlikely to receive major Android version updates at this point. However, both phones remain functional with their existing software and can run many popular apps.