ASUS Zenfone 8 vs Vivo iQOO 15
The ASUS Zenfone 8 (2021) runs on the Qualcomm Snapdragon 888, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $599 and $599. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 58/100 (a 28-point difference). Key differences: the Vivo iQOO 15 has the bigger battery (7000 mAh vs 4000); the main camera is 64 MP vs 50 MP; the Vivo iQOO 15 is faster in AnTuTu (3,758,268 vs 1,135,878); the ASUS Zenfone 8 is noticeably lighter (169g vs 215g).
Profile comparison
Category scores
ASUS Zenfone 8
Vivo iQOO 15
What makes ASUS Zenfone 8 better?
- Better main camera: 64MP vs 50MP
- Lighter: 169g vs 215g
- Better portability (68/100 vs 48/100)
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3758268 vs 1135878
- Better Geekbench Single: 3013 vs 1500
- Better Geekbench Multi: 9287 vs 3537
- Bigger battery: 7000 vs 4000 mAh
- Faster charging: 100W vs 30W
- Higher refresh rate: 144Hz vs 120Hz
- Higher performance (94/100 vs 64/100)
- Better camera (78/100 vs 54/100)
- Longer battery life (85/100 vs 29/100)
- Better display (99/100 vs 84/100)
Comparison verdict
Comparing the ASUS Zenfone 8 vs the Vivo iQOO 15, the Vivo iQOO 15 scores 28 points higher (86/100 vs 58/100). In the "performance" category, the Vivo iQOO 15 leads (94/100 vs 64/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 54/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 29/100). Value score: ASUS Zenfone 8 — 30/100, Vivo iQOO 15 — 86/100; it shows how far a model sits above or below the usual level for its price, and is not part of the overall rating. In the "performance" category, the Vivo iQOO 15 significantly outperforms the ASUS Zenfone 8 (94/100 vs 64/100). In the "display" category, the Vivo iQOO 15 notably outperforms the ASUS Zenfone 8 (99/100 vs 84/100). In the "camera" category, the Vivo iQOO 15 notably outperforms the ASUS Zenfone 8 (78/100 vs 54/100). In the "battery" category, the Vivo iQOO 15 significantly outperforms the ASUS Zenfone 8 (85/100 vs 29/100). In the "portability" category, the ASUS Zenfone 8 notably outperforms the Vivo iQOO 15 (68/100 vs 48/100).
Specs comparison
| Specification | ASUS Zenfone 8 | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 888 | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 1135878 | 3758268 | |
| Geekbench Single | 1500 | 3013 | |
| Geekbench Multi | 3537 | 9287 | |
| Display | 5.9" Super AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 2400x1080 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 4000 mAh | 7000 mAh | |
| Charging | 30W | 100W | |
| Wireless charging | — | 40W | |
| DXOMark (camera) | 116 | — | |
| Main camera | 64 MP | 50 MP | |
| Ultrawide | 12 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 12 MP | 32 MP | |
| RAM | 6GB / 8GB / 12GB / 16GB | 12GB / 16GB | |
| Storage | 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 11 / ZenUI | Android 16 | |
| Brightness (peak) | 1100 nits | 6000 nits | |
| NFC | yes | yes | |
| Protection | IP68 | IP68 | |
| Dimensions | 148.0×68.5×8.9 mm | 163.7×76.8×8.1 mm | |
| Weight | 169 g | 215 g | |
| Launch price | $599 | $599 |
Camera comparison
ASUS Zenfone 8
- Main: 64MP f/1.8
- Ultrawide: 12MP
- Front: 12MP
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
ASUS Zenfone 8
- 5.9" Super AMOLED
- Resolution: 2400x1080
- Refresh rate: 120 Hz
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
ASUS Zenfone 8
- 4000 mAh
- Wired: 30W
- Wireless charging: no data
Vivo iQOO 15
- 7000 mAh
- NanoReview test: web browsing 18:52 hrs, total 39:26 hrs
- Wired: 100W
- Wireless: 40W
Overall performance score
We compared ASUS Zenfone 8 and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads ASUS Zenfone 8 by 69.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $0. Same launch price.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 significantly outperforms the ASUS Zenfone 8 (94/100 vs 64/100).
display
In the "display" category, the Vivo iQOO 15 notably outperforms the ASUS Zenfone 8 (99/100 vs 84/100).
camera
In the "camera" category, the Vivo iQOO 15 notably outperforms the ASUS Zenfone 8 (78/100 vs 54/100).
battery
In the "battery" category, the Vivo iQOO 15 significantly outperforms the ASUS Zenfone 8 (85/100 vs 29/100).
portability
In the "portability" category, the ASUS Zenfone 8 notably outperforms the Vivo iQOO 15 (68/100 vs 48/100).
Frequently asked questions
Which is better: the ASUS Zenfone 8 or the Vivo iQOO 15?
The Vivo iQOO 15 significantly outperforms the ASUS Zenfone 8 by 28 points (86/100 vs 58/100).
What is the rating of the ASUS Zenfone 8 and the Vivo iQOO 15?
The ASUS Zenfone 8 has a MobileRank rating of 58/100, the Vivo iQOO 15 — 86/100.
Which has the better camera: the ASUS Zenfone 8 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (78/100 vs 54/100).
Which is more powerful: the ASUS Zenfone 8 or the Vivo iQOO 15?
The Vivo iQOO 15 leads on performance (94/100 vs 64/100).
Should you choose the ASUS Zenfone 8 over the Vivo iQOO 15?
The ASUS Zenfone 8 is a better fit for active users. The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.