ASUS Zenfone 4 Pro ZS551KL vs Vivo X500 Pro
The ASUS Zenfone 4 Pro ZS551KL (2017) runs on the Qualcomm Snapdragon 835, while the Vivo X500 Pro (2026) runs on the MediaTek Dimensity 9600 Pro; launch prices were $599 and $970. By overall MobileRank rating, the Vivo X500 Pro leads — 90/100 vs 31/100 (a 59-point difference). Key differences: the Vivo X500 Pro has the bigger battery (6510 mAh vs 3600); the main camera is 12 MP vs 50 MP; the Vivo X500 Pro is faster in AnTuTu (5,016,623 vs 438,016); the ASUS Zenfone 4 Pro ZS551KL is noticeably lighter (175g vs 192g).
Profile comparison
Category scores
ASUS Zenfone 4 Pro ZS551KL
Vivo X500 Pro
What makes ASUS Zenfone 4 Pro ZS551KL better?
- Lighter: 175g vs 192g
- Cheaper at launch: $599 vs $970
- Better portability (78/100 vs 63/100)
What makes Vivo X500 Pro better?
- Higher AnTuTu: 5016623 vs 438016
- Better Geekbench Single: 4188 vs 427
- Better Geekbench Multi: 13145 vs 1500
- Bigger battery: 6510 vs 3600 mAh
- Faster charging: 90W vs 18W
- Better main camera: 50MP vs 12MP
- Higher refresh rate: 144Hz vs 60Hz
- Higher performance (100/100 vs 33/100)
- Better camera (87/100 vs 17/100)
- Longer battery life (81/100 vs 13/100)
- Better display (94/100 vs 56/100)
Comparison verdict
Comparing the ASUS Zenfone 4 Pro ZS551KL vs the Vivo X500 Pro, the Vivo X500 Pro scores 59 points higher (90/100 vs 31/100). In the "performance" category, the Vivo X500 Pro leads (100/100 vs 33/100). In the "camera" category, the Vivo X500 Pro leads (87/100 vs 17/100). In the "battery" category, the Vivo X500 Pro leads (81/100 vs 13/100). Value score: ASUS Zenfone 4 Pro ZS551KL — 0/100, Vivo X500 Pro — 92/100; 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 X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (100/100 vs 33/100). In the "display" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (94/100 vs 56/100). In the "camera" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (87/100 vs 17/100). In the "battery" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (81/100 vs 13/100). In the "portability" category, the ASUS Zenfone 4 Pro ZS551KL notably outperforms the Vivo X500 Pro (78/100 vs 63/100).
Specs comparison
| Specification | ASUS Zenfone 4 Pro ZS551KL | Vivo X500 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 835 | MediaTek Dimensity 9600 Pro | |
| AnTuTu | 438016 | 5016623 | |
| Geekbench Single | 427 | 4188 | |
| Geekbench Multi | 1500 | 13145 | |
| Display | 5.5" AMOLED | 6.4" LTPO AMOLED | |
| Resolution | 1080x1920 | 1216x2660 | |
| Refresh rate | 60 Hz | 144 Hz | |
| Battery | 3600 mAh | 6510 mAh | |
| Charging | 18W | 90W | |
| Wireless charging | 0W | 40W | |
| Main camera | 12 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 16 MP | 64 MP | |
| Front camera | 8 MP | 50 MP | |
| RAM | 6GB | 12GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 7.1.1 Nougat | Android 17 | |
| Brightness (peak) | — | 4500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68/IP69 | |
| Dimensions | 156.9×75.6×7.6 mm | 151.8×71.9×8.1 mm | |
| Weight | 175 g | 192 g | |
| Launch price | $599 | $970 |
Camera comparison
ASUS Zenfone 4 Pro ZS551KL
- Main: 12MP f/1.7
- Telephoto: 16MP
- Front: 8MP
Vivo X500 Pro
- Main: 50MP f/1.6
- Ultrawide: 50MP
- Telephoto: 64MP
- Front: 50MP
Display comparison
ASUS Zenfone 4 Pro ZS551KL
- 5.5" AMOLED
- Resolution: 1080x1920
- Refresh rate: 60 Hz
Vivo X500 Pro
- 6.4" LTPO AMOLED
- Resolution: 1216x2660
- Refresh rate: 144 Hz
Battery and charging
ASUS Zenfone 4 Pro ZS551KL
- 3600 mAh
- Wired: 18W
- No wireless charging
Vivo X500 Pro
- 6510 mAh
- Wired: 90W
- Wireless: 40W
Overall performance score
We compared ASUS Zenfone 4 Pro ZS551KL and Vivo X500 Pro, covering their specs and all relevant benchmarks.
Vivo X500 Pro leads ASUS Zenfone 4 Pro ZS551KL by 91.3% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $371. ASUS Zenfone 4 Pro ZS551KL was $371 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (100/100 vs 33/100).
display
In the "display" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (94/100 vs 56/100).
camera
In the "camera" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (87/100 vs 17/100).
battery
In the "battery" category, the Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (81/100 vs 13/100).
portability
In the "portability" category, the ASUS Zenfone 4 Pro ZS551KL notably outperforms the Vivo X500 Pro (78/100 vs 63/100).
Frequently asked questions
Which is better: the ASUS Zenfone 4 Pro ZS551KL or the Vivo X500 Pro?
The Vivo X500 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL by 59 points (90/100 vs 31/100).
What is the rating of the ASUS Zenfone 4 Pro ZS551KL and the Vivo X500 Pro?
The ASUS Zenfone 4 Pro ZS551KL has a MobileRank rating of 31/100, the Vivo X500 Pro — 90/100.
Which has the better camera: the ASUS Zenfone 4 Pro ZS551KL or the Vivo X500 Pro?
The Vivo X500 Pro leads on camera score (87/100 vs 17/100).
Which is more powerful: the ASUS Zenfone 4 Pro ZS551KL or the Vivo X500 Pro?
The Vivo X500 Pro leads on performance (100/100 vs 33/100).
Should you choose the ASUS Zenfone 4 Pro ZS551KL over the Vivo X500 Pro?
The Vivo X500 Pro is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.