ASUS Zenfone 5z ZS620KL vs Vivo iQOO 15 Ultra
The ASUS Zenfone 5z ZS620KL (2018) runs on the Qualcomm Snapdragon 845, while the Vivo iQOO 15 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5. By overall MobileRank rating, the Vivo iQOO 15 Ultra leads — 89/100 vs 31/100 (a 58-point difference). Key differences: the Vivo iQOO 15 Ultra has the bigger battery (7400 mAh vs 3300); the main camera is 12 MP vs 50 MP; the Vivo iQOO 15 Ultra is faster in AnTuTu (4,602,290 vs 572,788); the ASUS Zenfone 5z ZS620KL is noticeably lighter (165g vs 227g).
Profile comparison
Category scores
ASUS Zenfone 5z ZS620KL
Vivo iQOO 15 Ultra
What makes ASUS Zenfone 5z ZS620KL better?
- Lighter: 165g vs 227g
- Better portability (81/100 vs 35/100)
What makes Vivo iQOO 15 Ultra better?
- Higher AnTuTu: 4602290 vs 572788
- Better Geekbench Single: 3639 vs 566
- Better Geekbench Multi: 11047 vs 2130
- Bigger battery: 7400 vs 3300 mAh
- Better main camera: 50MP vs 12MP
- Higher refresh rate: 144Hz vs 60Hz
- Higher performance (99/100 vs 41/100)
- Better camera (78/100 vs 13/100)
- Longer battery life (92/100 vs 12/100)
- Better display (99/100 vs 43/100)
Comparison verdict
Comparing the ASUS Zenfone 5z ZS620KL vs the Vivo iQOO 15 Ultra, the Vivo iQOO 15 Ultra scores 58 points higher (89/100 vs 31/100). In the "performance" category, the Vivo iQOO 15 Ultra leads (99/100 vs 41/100). In the "camera" category, the Vivo iQOO 15 Ultra leads (78/100 vs 13/100). In the "battery" category, the Vivo iQOO 15 Ultra leads (92/100 vs 12/100). In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (99/100 vs 41/100). In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (99/100 vs 43/100). In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (78/100 vs 13/100). In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (92/100 vs 12/100). In the "portability" category, the ASUS Zenfone 5z ZS620KL significantly outperforms the Vivo iQOO 15 Ultra (81/100 vs 35/100).
Specs comparison
| Specification | ASUS Zenfone 5z ZS620KL | Vivo iQOO 15 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 845 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 572788 | 4602290 | |
| Geekbench Single | 566 | 3639 | |
| Geekbench Multi | 2130 | 11047 | |
| Display | 6.2" IPS LCD | 6.8" LTPO AMOLED | |
| Resolution | 1080x2246 | 1440x3168 | |
| Refresh rate | 60 Hz | 144 Hz | |
| Battery | 3300 mAh | 7400 mAh | |
| Charging | — | 120W | |
| Wireless charging | 0W | 50W | |
| Main camera | 12 MP | 50 MP | |
| Ultrawide | 8 MP | 50 MP | |
| Telephoto | 0 MP | 50 MP | |
| Front camera | 8 MP | 32 MP | |
| RAM | 4GB / 6GB / 8GB | 12GB / 16GB / 24GB | |
| Storage | 64GB / 128GB / 256GB | 256GB / 512GB / 1TB | |
| OS | Android 8.0 Oreo | Android 16 | |
| Brightness (peak) | — | 8000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 153.0×75.7×7.9 mm | 163.7×76.8×8.7 mm | |
| Weight | 165 g | 227 g | |
| Launch price | — | $799 |
Camera comparison
ASUS Zenfone 5z ZS620KL
- Main: 12MP f/1.8
- Ultrawide: 8MP
- Front: 8MP
Vivo iQOO 15 Ultra
- Main: 50MP f/1.9
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
ASUS Zenfone 5z ZS620KL
- 6.2" IPS LCD
- Resolution: 1080x2246
- Refresh rate: 60 Hz
Vivo iQOO 15 Ultra
- 6.8" LTPO AMOLED
- Resolution: 1440x3168
- Refresh rate: 144 Hz
Battery and charging
ASUS Zenfone 5z ZS620KL
- 3300 mAh
- No wireless charging
Vivo iQOO 15 Ultra
- 7400 mAh
- Wired: 120W
- Wireless: 50W
Overall performance score
We compared ASUS Zenfone 5z ZS620KL and Vivo iQOO 15 Ultra, covering their specs and all relevant benchmarks.
Vivo iQOO 15 Ultra leads ASUS Zenfone 5z ZS620KL by 87.6% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
ASUS Zenfone 5z ZS620KL
Price unknownDetailed category analysis
performance
In the "performance" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (99/100 vs 41/100).
display
In the "display" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (99/100 vs 43/100).
camera
In the "camera" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (78/100 vs 13/100).
battery
In the "battery" category, the Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL (92/100 vs 12/100).
portability
In the "portability" category, the ASUS Zenfone 5z ZS620KL significantly outperforms the Vivo iQOO 15 Ultra (81/100 vs 35/100).
Frequently asked questions
Which is better: the ASUS Zenfone 5z ZS620KL or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra significantly outperforms the ASUS Zenfone 5z ZS620KL by 58 points (89/100 vs 31/100).
What is the rating of the ASUS Zenfone 5z ZS620KL and the Vivo iQOO 15 Ultra?
The ASUS Zenfone 5z ZS620KL has a MobileRank rating of 31/100, the Vivo iQOO 15 Ultra — 89/100.
Which has the better camera: the ASUS Zenfone 5z ZS620KL or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on camera score (78/100 vs 13/100).
Which is more powerful: the ASUS Zenfone 5z ZS620KL or the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra leads on performance (99/100 vs 41/100).
Should you choose the ASUS Zenfone 5z ZS620KL over the Vivo iQOO 15 Ultra?
The Vivo iQOO 15 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.