ASUS Zenfone 4 Pro ZS551KL vs Vivo X300 Pro
The ASUS Zenfone 4 Pro ZS551KL (2017) runs on the Qualcomm Snapdragon 835, while the Vivo X300 Pro (2025) runs on the Dimensity 9500; launch prices were $599 and $899. By overall MobileRank rating, the Vivo X300 Pro leads — 88/100 vs 31/100 (a 57-point difference). Key differences: the Vivo X300 Pro has the bigger battery (6510 mAh vs 3600); the main camera is 12 MP vs 200 MP; the Vivo X300 Pro is faster in AnTuTu (3,326,259 vs 438,016); the ASUS Zenfone 4 Pro ZS551KL is noticeably lighter (175g vs 226g).
Profile comparison
Category scores
ASUS Zenfone 4 Pro ZS551KL
Vivo X300 Pro
What makes ASUS Zenfone 4 Pro ZS551KL better?
- Lighter: 175g vs 226g
- Cheaper at launch: $599 vs $899
- Better portability (78/100 vs 43/100)
What makes Vivo X300 Pro better?
- Higher AnTuTu: 3326259 vs 438016
- Better Geekbench Single: 3293 vs 427
- Better Geekbench Multi: 10243 vs 1500
- Bigger battery: 6510 vs 3600 mAh
- Faster charging: 90W vs 18W
- Better main camera: 200MP vs 12MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (94/100 vs 33/100)
- Better camera (96/100 vs 17/100)
- Longer battery life (81/100 vs 13/100)
- Better display (84/100 vs 56/100)
Comparison verdict
Comparing the ASUS Zenfone 4 Pro ZS551KL vs the Vivo X300 Pro, the Vivo X300 Pro scores 57 points higher (88/100 vs 31/100). In the "performance" category, the Vivo X300 Pro leads (94/100 vs 33/100). In the "camera" category, the Vivo X300 Pro leads (96/100 vs 17/100). In the "battery" category, the Vivo X300 Pro leads (81/100 vs 13/100). Value score: ASUS Zenfone 4 Pro ZS551KL — 0/100, Vivo X300 Pro — 88/100; 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 X300 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (94/100 vs 33/100). In the "display" category, the Vivo X300 Pro notably outperforms the ASUS Zenfone 4 Pro ZS551KL (84/100 vs 56/100). In the "camera" category, the Vivo X300 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (96/100 vs 17/100). In the "battery" category, the Vivo X300 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (81/100 vs 13/100). In the "portability" category, the ASUS Zenfone 4 Pro ZS551KL significantly outperforms the Vivo X300 Pro (78/100 vs 43/100).
Specs comparison
| Specification | ASUS Zenfone 4 Pro ZS551KL | Vivo X300 Pro | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 835 | Dimensity 9500 | |
| AnTuTu | 438016 | 3326259 | |
| Geekbench Single | 427 | 3293 | |
| Geekbench Multi | 1500 | 10243 | |
| Display | 5.5" AMOLED | 6.8" AMOLED | |
| Resolution | 1080x1920 | 1260x2800 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 3600 mAh | 6510 mAh | |
| Charging | 18W | 90W | |
| Wireless charging | 0W | 40W | |
| DXOMark (camera) | — | 171 | |
| Main camera | 12 MP | 200 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 16 MP | 50 MP | |
| Front camera | 8 MP | 32 MP | |
| RAM | 6GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 7.1.1 Nougat | Android 16 | |
| Brightness (peak) | — | 4500 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 156.9×75.6×7.6 mm | 161.2×75.5×8.0 mm | |
| Weight | 175 g | 226 g | |
| Launch price | $599 | $899 |
Camera comparison
ASUS Zenfone 4 Pro ZS551KL
- Main: 12MP f/1.7
- Telephoto: 16MP
- Front: 8MP
Vivo X300 Pro
- Main: 200MP f/1.57
- Ultrawide: 50MP
- Telephoto: 50MP
- Front: 32MP
Display comparison
ASUS Zenfone 4 Pro ZS551KL
- 5.5" AMOLED
- Resolution: 1080x1920
- Refresh rate: 60 Hz
Vivo X300 Pro
- 6.8" AMOLED
- Resolution: 1260x2800
- Refresh rate: 120 Hz
Battery and charging
ASUS Zenfone 4 Pro ZS551KL
- 3600 mAh
- Wired: 18W
- No wireless charging
Vivo X300 Pro
- 6510 mAh
- NanoReview test: web browsing 13:30 hrs, total 24:37 hrs
- Wired: 90W
- Wireless: 40W
Overall performance score
We compared ASUS Zenfone 4 Pro ZS551KL and Vivo X300 Pro, covering their specs and all relevant benchmarks.
Vivo X300 Pro leads ASUS Zenfone 4 Pro ZS551KL by 86.8% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $300. ASUS Zenfone 4 Pro ZS551KL was $300 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Vivo X300 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (94/100 vs 33/100).
display
In the "display" category, the Vivo X300 Pro notably outperforms the ASUS Zenfone 4 Pro ZS551KL (84/100 vs 56/100).
camera
In the "camera" category, the Vivo X300 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (96/100 vs 17/100).
battery
In the "battery" category, the Vivo X300 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 significantly outperforms the Vivo X300 Pro (78/100 vs 43/100).
Frequently asked questions
Which is better: the ASUS Zenfone 4 Pro ZS551KL or the Vivo X300 Pro?
The Vivo X300 Pro significantly outperforms the ASUS Zenfone 4 Pro ZS551KL by 57 points (88/100 vs 31/100).
What is the rating of the ASUS Zenfone 4 Pro ZS551KL and the Vivo X300 Pro?
The ASUS Zenfone 4 Pro ZS551KL has a MobileRank rating of 31/100, the Vivo X300 Pro — 88/100.
Which has the better camera: the ASUS Zenfone 4 Pro ZS551KL or the Vivo X300 Pro?
The Vivo X300 Pro leads on camera score (96/100 vs 17/100).
Which is more powerful: the ASUS Zenfone 4 Pro ZS551KL or the Vivo X300 Pro?
The Vivo X300 Pro leads on performance (94/100 vs 33/100).
Should you choose the ASUS Zenfone 4 Pro ZS551KL over the Vivo X300 Pro?
The Vivo X300 Pro is a better fit for gamers and power users, mobile photography enthusiasts, those who care about battery life, budget-conscious buyers.