ASUS ROG Phone II ZS660KL vs Vivo iQOO 15
The ASUS ROG Phone II ZS660KL (2019) runs on the Qualcomm Snapdragon 855+, while the Vivo iQOO 15 (2025) runs on the Qualcomm Snapdragon 8 Elite; launch prices were $899 and $599. By overall MobileRank rating, the Vivo iQOO 15 leads — 86/100 vs 52/100 (a 34-point difference). Key differences: the Vivo iQOO 15 has the bigger battery (7000 mAh vs 6000); the main camera is 48 MP vs 50 MP; the Vivo iQOO 15 is faster in AnTuTu (3,758,268 vs 859,084); the Vivo iQOO 15 is noticeably lighter (215g vs 240g).
Profile comparison
Category scores
ASUS ROG Phone II ZS660KL
Vivo iQOO 15
What makes ASUS ROG Phone II ZS660KL better?
- Overall rating 52/100
What makes Vivo iQOO 15 better?
- Higher AnTuTu: 3758268 vs 859084
- Better Geekbench Single: 3013 vs 1031
- Better Geekbench Multi: 9287 vs 2864
- Bigger battery: 7000 vs 6000 mAh
- Faster charging: 100W vs 30W
- Better main camera: 50MP vs 48MP
- Higher refresh rate: 144Hz vs 120Hz
- Lighter: 215g vs 240g
- Cheaper at launch: $599 vs $899
- Higher performance (94/100 vs 55/100)
- Better camera (78/100 vs 39/100)
- Longer battery life (85/100 vs 53/100)
- Better display (99/100 vs 79/100)
- Better portability (48/100 vs 20/100)
Comparison verdict
Comparing the ASUS ROG Phone II ZS660KL vs the Vivo iQOO 15, the Vivo iQOO 15 scores 34 points higher (86/100 vs 52/100). In the "performance" category, the Vivo iQOO 15 leads (94/100 vs 55/100). In the "camera" category, the Vivo iQOO 15 leads (78/100 vs 39/100). In the "battery" category, the Vivo iQOO 15 leads (85/100 vs 53/100). Value score: ASUS ROG Phone II ZS660KL — 16/100, 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 ROG Phone II ZS660KL (94/100 vs 55/100). In the "display" category, the Vivo iQOO 15 notably outperforms the ASUS ROG Phone II ZS660KL (99/100 vs 79/100). In the "camera" category, the Vivo iQOO 15 significantly outperforms the ASUS ROG Phone II ZS660KL (78/100 vs 39/100). In the "battery" category, the Vivo iQOO 15 significantly outperforms the ASUS ROG Phone II ZS660KL (85/100 vs 53/100). In the "portability" category, the Vivo iQOO 15 notably outperforms the ASUS ROG Phone II ZS660KL (48/100 vs 20/100).
Specs comparison
| Specification | ASUS ROG Phone II ZS660KL | Vivo iQOO 15 | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 855+ | Qualcomm Snapdragon 8 Elite | |
| AnTuTu | 859084 | 3758268 | |
| Geekbench Single | 1031 | 3013 | |
| Geekbench Multi | 2864 | 9287 | |
| Display | 6.6" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x2340 | 1440x3168 | |
| Refresh rate | 120 Hz | 144 Hz | |
| Battery | 6000 mAh | 7000 mAh | |
| Charging | 30W | 100W | |
| Wireless charging | 0W | 40W | |
| Main camera | 48 MP | 50 MP | |
| Ultrawide | 13 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 24 MP | 32 MP | |
| RAM | 8GB / 12GB | 12GB / 16GB | |
| Storage | 128GB / 256GB / 512GB / 1TB | 256GB / 512GB / 1TB | |
| OS | Android 9.0 / ROG UI | Android 16 | |
| Brightness (peak) | — | 6000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 171.0×77.6×9.5 mm | 163.7×76.8×8.1 mm | |
| Weight | 240 g | 215 g | |
| Launch price | $899 | $599 |
Camera comparison
ASUS ROG Phone II ZS660KL
- Main: 48MP f/1.8
- Ultrawide: 13MP
- Front: 24MP
Vivo iQOO 15
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
ASUS ROG Phone II ZS660KL
- 6.6" AMOLED
- Resolution: 1080x2340
- Refresh rate: 120 Hz
Vivo iQOO 15
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
ASUS ROG Phone II ZS660KL
- 6000 mAh
- Wired: 30W
- No wireless charging
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 ROG Phone II ZS660KL and Vivo iQOO 15, covering their specs and all relevant benchmarks.
Vivo iQOO 15 leads ASUS ROG Phone II ZS660KL by 77.1% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $300. Vivo iQOO 15 was $300 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 significantly outperforms the ASUS ROG Phone II ZS660KL (94/100 vs 55/100).
display
In the "display" category, the Vivo iQOO 15 notably outperforms the ASUS ROG Phone II ZS660KL (99/100 vs 79/100).
camera
In the "camera" category, the Vivo iQOO 15 significantly outperforms the ASUS ROG Phone II ZS660KL (78/100 vs 39/100).
battery
In the "battery" category, the Vivo iQOO 15 significantly outperforms the ASUS ROG Phone II ZS660KL (85/100 vs 53/100).
portability
In the "portability" category, the Vivo iQOO 15 notably outperforms the ASUS ROG Phone II ZS660KL (48/100 vs 20/100).
Frequently asked questions
Which is better: the ASUS ROG Phone II ZS660KL or the Vivo iQOO 15?
The Vivo iQOO 15 significantly outperforms the ASUS ROG Phone II ZS660KL by 34 points (86/100 vs 52/100).
What is the rating of the ASUS ROG Phone II ZS660KL and the Vivo iQOO 15?
The ASUS ROG Phone II ZS660KL has a MobileRank rating of 52/100, the Vivo iQOO 15 — 86/100.
Which has the better camera: the ASUS ROG Phone II ZS660KL or the Vivo iQOO 15?
The Vivo iQOO 15 leads on camera score (78/100 vs 39/100).
Which is more powerful: the ASUS ROG Phone II ZS660KL or the Vivo iQOO 15?
The Vivo iQOO 15 leads on performance (94/100 vs 55/100).
Should you choose the ASUS ROG Phone II ZS660KL over the Vivo iQOO 15?
The Vivo iQOO 15 is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.