ASUS Zenfone 4 Pro ZS551KL vs Nubia Z80 Ultra
The ASUS Zenfone 4 Pro ZS551KL (2017) runs on the Qualcomm Snapdragon 835, while the Nubia Z80 Ultra (2026) runs on the Qualcomm Snapdragon 8 Elite Gen 5; launch prices were $599 and $749. By overall MobileRank rating, the Nubia Z80 Ultra leads — 85/100 vs 31/100 (a 54-point difference). Key differences: the Nubia Z80 Ultra has the bigger battery (6500 mAh vs 3600); the main camera is 12 MP vs 50 MP; the Nubia Z80 Ultra is faster in AnTuTu (3,942,923 vs 438,016); the ASUS Zenfone 4 Pro ZS551KL is noticeably lighter (175g vs 225g).
Profile comparison
Category scores
ASUS Zenfone 4 Pro ZS551KL
Nubia Z80 Ultra
What makes ASUS Zenfone 4 Pro ZS551KL better?
- Lighter: 175g vs 225g
- Cheaper at launch: $599 vs $749
- Better portability (78/100 vs 38/100)
What makes Nubia Z80 Ultra better?
- Higher AnTuTu: 3942923 vs 438016
- Better Geekbench Single: 3639 vs 427
- Better Geekbench Multi: 11047 vs 1500
- Bigger battery: 6500 vs 3600 mAh
- Faster charging: 80W vs 18W
- Better main camera: 50MP vs 12MP
- Higher refresh rate: 120Hz vs 60Hz
- Higher performance (98/100 vs 33/100)
- Better camera (79/100 vs 17/100)
- Longer battery life (81/100 vs 13/100)
- Better display (83/100 vs 56/100)
Comparison verdict
Comparing the ASUS Zenfone 4 Pro ZS551KL vs the Nubia Z80 Ultra, the Nubia Z80 Ultra scores 54 points higher (85/100 vs 31/100). In the "performance" category, the Nubia Z80 Ultra leads (98/100 vs 33/100). In the "camera" category, the Nubia Z80 Ultra leads (79/100 vs 17/100). In the "battery" category, the Nubia Z80 Ultra leads (81/100 vs 13/100). Value score: ASUS Zenfone 4 Pro ZS551KL — 0/100, Nubia Z80 Ultra — 84/100; 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 Nubia Z80 Ultra significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (98/100 vs 33/100). In the "display" category, the Nubia Z80 Ultra notably outperforms the ASUS Zenfone 4 Pro ZS551KL (83/100 vs 56/100). In the "camera" category, the Nubia Z80 Ultra significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (79/100 vs 17/100). In the "battery" category, the Nubia Z80 Ultra 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 Nubia Z80 Ultra (78/100 vs 38/100).
Specs comparison
| Specification | ASUS Zenfone 4 Pro ZS551KL | Nubia Z80 Ultra | |
|---|---|---|---|
| Processor | Qualcomm Snapdragon 835 | Qualcomm Snapdragon 8 Elite Gen 5 | |
| AnTuTu | 438016 | 3942923 | |
| Geekbench Single | 427 | 3639 | |
| Geekbench Multi | 1500 | 11047 | |
| Display | 5.5" AMOLED | 6.8" LTPO AMOLED | |
| Resolution | 1080x1920 | 2688x1216 | |
| Refresh rate | 60 Hz | 120 Hz | |
| Battery | 3600 mAh | 6500 mAh | |
| Charging | 18W | 80W | |
| Wireless charging | 0W | 80W | |
| Main camera | 12 MP | 50 MP | |
| Ultrawide | 0 MP | 50 MP | |
| Telephoto | 16 MP | 64 MP | |
| Front camera | 8 MP | 16 MP | |
| RAM | 6GB | 12GB / 16GB | |
| Storage | 64GB / 128GB | 256GB / 512GB / 1TB | |
| OS | Android 7.1.1 Nougat | Android 16 | |
| Brightness (peak) | — | 2000 nits | |
| NFC | yes | yes | |
| Protection | — | IP68 | |
| Dimensions | 156.9×75.6×7.6 mm | 164.5×77.2×8.6 mm | |
| Weight | 175 g | 225 g | |
| Launch price | $599 | $749 |
Camera comparison
ASUS Zenfone 4 Pro ZS551KL
- Main: 12MP f/1.7
- Telephoto: 16MP
- Front: 8MP
Nubia Z80 Ultra
- Main: 50MP f/1.59
- Ultrawide: 50MP
- Telephoto: 64MP
- Front: 16MP
Display comparison
ASUS Zenfone 4 Pro ZS551KL
- 5.5" AMOLED
- Resolution: 1080x1920
- Refresh rate: 60 Hz
Nubia Z80 Ultra
- 6.8" LTPO AMOLED
- Resolution: 2688x1216
- Refresh rate: 120 Hz
Battery and charging
ASUS Zenfone 4 Pro ZS551KL
- 3600 mAh
- Wired: 18W
- No wireless charging
Nubia Z80 Ultra
- 6500 mAh
- NanoReview test: web browsing 14:17 hrs, total 34:15 hrs
- Wired: 80W
- Wireless: 80W
Overall performance score
We compared ASUS Zenfone 4 Pro ZS551KL and Nubia Z80 Ultra, covering their specs and all relevant benchmarks.
Nubia Z80 Ultra leads ASUS Zenfone 4 Pro ZS551KL by 88.9% in our overall performance rating.
Benchmarks
Launch prices and where to check today's
Launch price difference: $150. ASUS Zenfone 4 Pro ZS551KL was $150 cheaper at launch.
Detailed category analysis
performance
In the "performance" category, the Nubia Z80 Ultra significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (98/100 vs 33/100).
display
In the "display" category, the Nubia Z80 Ultra notably outperforms the ASUS Zenfone 4 Pro ZS551KL (83/100 vs 56/100).
camera
In the "camera" category, the Nubia Z80 Ultra significantly outperforms the ASUS Zenfone 4 Pro ZS551KL (79/100 vs 17/100).
battery
In the "battery" category, the Nubia Z80 Ultra 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 Nubia Z80 Ultra (78/100 vs 38/100).
Frequently asked questions
Which is better: the ASUS Zenfone 4 Pro ZS551KL or the Nubia Z80 Ultra?
The Nubia Z80 Ultra significantly outperforms the ASUS Zenfone 4 Pro ZS551KL by 54 points (85/100 vs 31/100).
What is the rating of the ASUS Zenfone 4 Pro ZS551KL and the Nubia Z80 Ultra?
The ASUS Zenfone 4 Pro ZS551KL has a MobileRank rating of 31/100, the Nubia Z80 Ultra — 85/100.
Which has the better camera: the ASUS Zenfone 4 Pro ZS551KL or the Nubia Z80 Ultra?
The Nubia Z80 Ultra leads on camera score (79/100 vs 17/100).
Which is more powerful: the ASUS Zenfone 4 Pro ZS551KL or the Nubia Z80 Ultra?
The Nubia Z80 Ultra leads on performance (98/100 vs 33/100).
Should you choose the ASUS Zenfone 4 Pro ZS551KL over the Nubia Z80 Ultra?
The Nubia Z80 Ultra is a better fit for gamers and power users, those who care about battery life, budget-conscious buyers.