Asus Zenfone 7 vs OnePlus 8 Pro: A Detailed Comparison of Two 2020 Flagships
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🏆 Quick Verdict
For the average user prioritizing battery life and convenience, the OnePlus 8 Pro is the better choice. Its significantly longer endurance rating (103h vs 42h) and 30W wireless charging capabilities outweigh the Zenfone 7’s more compact design. However, the Zenfone 7 remains a compelling option for those seeking a smaller, more pocketable flagship.
| PHONES | ||
|---|---|---|
| Phone Names | Asus Zenfone 7 | OnePlus 8 Pro |
| Network | ||
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 38, 39, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 34, 38, 39, 40, 41, 42, 46, 66 - EU |
| 5G bands | 1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 SA/NSA | 1, 3, 7, 28, 78 SA/NSA - EU |
| Speed | HSPA 42.2/5.76 Mbps, LTE (5CA) Cat19 1800/150 Mbps, 5G 3.6 Gbps DL | HSPA 42.2/5.76 Mbps, LTE (5CA) Cat18 1200/150 Mbps, 5G 7.5 Gbps DL |
| Technology | GSM / HSPA / LTE / 5G | GSM / CDMA / HSPA / LTE / 5G |
| - | 78 SA/NSA - IN | |
| Launch | ||
|---|---|---|
| Announced | 2020, August 26. Released 2020, September 01 | 2020, April 14 |
| Status | Discontinued | Available. Released 2020, April 21 |
| Body | ||
|---|---|---|
| Build | Glass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame |
| Dimensions | 165.1 x 77.3 x 9.6 mm (6.5 x 3.04 x 0.38 in) | 165.3 x 74.4 x 8.5 mm (6.51 x 2.93 x 0.33 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 230 g (8.11 oz) | 199 g (7.02 oz) |
| - | IP68 dust/water resistant | |
| Display | ||
|---|---|---|
| Protection | Corning Gorilla Glass 6 | Corning Gorilla Glass 5 |
| Resolution | 1080 x 2400 pixels, 20:9 ratio (~395 ppi density) | 1440 x 3168 pixels (~513 ppi density) |
| Size | 6.67 inches, 107.4 cm2 (~84.2% screen-to-body ratio) | 6.78 inches, 111.7 cm2 (~90.8% screen-to-body ratio) |
| Type | Super AMOLED, 90Hz, HDR10+, 700 nits (HBM) | Fluid AMOLED, 1B colors, 120Hz, HDR10+ |
| Platform | ||
|---|---|---|
| CPU | Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) | Octa-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) |
| Chipset | Qualcomm SM8250 Snapdragon 865 5G (7 nm+) | Qualcomm SM8250 Snapdragon 865 5G (7 nm+) |
| GPU | Adreno 650 | Adreno 650 |
| OS | Android 10, upgradable to Android 12, ZenUI | Android 10, upgradable to Android 13, OxygenOS 13 |
| Memory | ||
|---|---|---|
| Card slot | microSDXC (dedicated slot) | No |
| Internal | 128GB 6GB RAM, 128GB 8GB RAM | 128GB 8GB RAM, 256GB 12GB RAM |
| UFS 3.1 | UFS 3.0 | |
| Main Camera | ||
|---|---|---|
| Features | Dual-LED flash, HDR, auto panorama (motorized rotation) | Laser AF, Dual-LED flash, HDR, panorama |
| Quad | - | 48 MP, f/1.8, 25mm (wide), 1/1.43", 1.12µm, multi-directional PDAF, OIS 8 MP, f/2.4, (telephoto), 1/1.0µm, PDAF, OIS, 3x optical zoom 48 MP, f/2.2, 14mm, 116˚ (ultrawide), 1/2.0", 0.8µm, PDAF 5 MP, f/2.4, (Color filter camera) |
| Single | 5 MP, f/2.6, AF | - |
| Triple | 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.4, 80mm (telephoto), PDAF, 3x optical zoom 12 MP, f/2.2, 113˚, 17mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF | - |
| Video | 8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS, HDR | 4K@30/60fps, 1080p@30/60/240fps, Auto HDR, gyro-EIS |
| Selfie camera | ||
|---|---|---|
| Features | Dual-LED flash, HDR, auto panorama (motorized rotation) | HDR |
| Single | VGA | 16 MP, f/2.5, (wide), 1/3.06", 1.0µm |
| Triple | Motorized flip-up main camera module | - |
| Video | 8K@30fps, 4K@30/60/120fps, 1080p@30/60/240fps, 720p@480fps; gyro-EIS, HDR | 1080p@30fps, gyro-EIS |
| Sound | ||
|---|---|---|
| 3.5mm jack | No | No |
| 35mm jack | No | No |
| Loudspeaker | Yes, with stereo speakers | Yes, with stereo speakers |
| 24-bit/192kHz audio | - | |
| Comms | ||
|---|---|---|
| Bluetooth | 5.0, A2DP, LE, aptX Adaptive | 5.1, A2DP, LE, aptX HD |
| NFC | Yes | Yes |
| Positioning | GPS (L1+L5), GLONASS (L1), BDS (B1+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5) | GPS (L1+L5), GLONASS (G1), BDS (B1), GALILEO (E1+E5a) |
| Radio | No | No |
| USB | USB Type-C | USB Type-C 3.1, OTG |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct, DLNA |
| Features | ||
|---|---|---|
| Sensors | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass | Fingerprint (under display, optical), accelerometer, gyro, proximity, compass |
| Battery | ||
|---|---|---|
| Charging | 30W wired, PD3.0, 60% in 34 min, 100% in 93 min Reverse wired | 30W wired, 50% in 23 min 30W wireless, 50% in 30 min 3W reverse wireless |
| Stand-by | Up to 450 h (2G) / Up to 430 h (3G) | - |
| Talk time | Up to 14 h 10 min (2G) / Up to 7 h 10 min (3G) | - |
| Type | Li-Po 5000 mAh | Li-Po 4510 mAh, non-removable |
| Misc | ||
|---|---|---|
| Colors | Aurora Black, Pastel White | Glacial Green, Ultramarine Blue, Onyx Black |
| Models | ZS670KS, ASUS_I002D, I002D | IN2023, IN2020, IN2021, IN2025 |
| Price | About 910 EUR | About 310 EUR |
| SAR | 1.03 W/kg (head) 1.28 W/kg (body) | - |
| SAR EU | 0.52 W/kg (head) | - |
| Pricing | ||
|---|---|---|
| 128GB 8GB RAM | - | $ 428.39 |
| 256GB 12GB RAM | - | $ 853.51 |
| RENEWED | - | $ 486.00 |
| Tests | ||
|---|---|---|
| Audio quality | Noise -82.1dB / Crosstalk -80.7dB | - |
| Battery life | Endurance rating 42h | Endurance rating 103h |
| Camera | Photo / Video | Photo / Video |
| Display | Contrast ratio: Infinite (nominal) / 2.422:1 (sunlight) | Contrast ratio: Infinite (nominal) |
| Loudspeaker | Voice 66dB / Noise 63dB / Ring 76dB | -23.5 LUFS (Very good) |
| Performance | - | AnTuTu: 573276 (v8) GeekBench: 3374 (v5.1) GFXBench: 24fps (ES 3.1 onscreen) |
Asus Zenfone 7
- Compact and pocketable design
- Unique flip camera mechanism for versatile shooting
- Competitive Snapdragon 865 performance
- Significantly shorter battery life
- Lacks wireless charging
- Smaller display may not appeal to all users
OnePlus 8 Pro
- Excellent battery life (103h endurance)
- 30W wired and wireless charging
- Larger, more immersive display
- Larger size may be less comfortable for one-handed use
- Higher price point
- More conventional camera design
Display Comparison
Both the Zenfone 7 and OnePlus 8 Pro feature displays with an 'Infinite' (nominal) contrast ratio, suggesting excellent black levels. However, the OnePlus 8 Pro’s larger screen size is a key differentiator. While both offer a smooth visual experience, the Zenfone 7’s smaller size may appeal to users who find larger phones unwieldy. The OnePlus 8 Pro’s display is likely to be brighter in direct sunlight, though specific nit values are not provided, making it more usable outdoors.
Camera Comparison
Both phones offer photo and video capabilities, but the Zenfone 7’s flip camera mechanism is a standout feature, eliminating the need for a notch or punch-hole. Without detailed sensor information, it’s difficult to definitively declare a camera winner. However, the Zenfone 7’s unique design allows for consistently sharp selfies, as the main camera sensors are used for front-facing shots. The OnePlus 8 Pro likely benefits from more advanced image processing algorithms, but the Zenfone 7’s hardware versatility is a significant advantage.
Performance
Both devices are powered by the Qualcomm SM8250 Snapdragon 865 5G (7 nm+), coupled with an Octa-core CPU configuration (1x2.84 GHz Cortex-A77, 3x2.42 GHz Cortex-A77, 4x1.80 GHz Cortex-A55). This means raw processing power will be nearly identical for most tasks. The performance difference will likely come down to thermal management and sustained performance. While neither device’s specs indicate a significant advantage, OnePlus is known for its software optimizations, potentially leading to slightly smoother long-term performance. Both utilize the same RAM configuration options, with the OnePlus 8 Pro offering a 12GB/256GB option at $853.51.
Battery Life
The OnePlus 8 Pro boasts a substantial advantage in battery endurance, achieving a rating of 103 hours compared to the Zenfone 7’s 42 hours. While both support 30W wired charging, the OnePlus 8 Pro adds 30W wireless charging and 3W reverse wireless charging, offering greater flexibility. The OnePlus 8 Pro reaches 50% charge in 23 minutes with wired charging, while the Zenfone 7 takes 34 minutes to reach 60%. The OnePlus 8 Pro’s wireless charging capability is a major convenience factor for users who prefer cable-free charging.
Buying Guide
Buy the Asus Zenfone 7 if you need a truly compact flagship phone that’s easy to handle one-handed and appreciate the unique versatility of its flip camera. Buy the OnePlus 8 Pro if you prefer a larger, more immersive display, faster wireless charging, and a longer-lasting battery, even if it means sacrificing some portability.