Asus
Asus Zenfone 4 Pro ZS551KL
📱
Display
5.5"
🔋
Capacity
3600 mAh
📷
Main Camera
12 MP
💾
RAM
6 GB
⚡
Chipset
Qualcomm MSM8998 Snapdragon 835
🔌
Charging
18W
Asus Zenfone 4 Pro ZS551KL is a smartphone released in 2017 featuring 5.50-inch display, Qualcomm MSM8998 Snapdragon 835 processor, 6GB RAM, 3600mAh battery, 18W fast charging.
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The Asus Zenfone 4 Pro ZS551KL is a smartphone from Asus featuring Qualcomm MSM8998 Snapdragon 835 processor, 5.5" AMOLED, 12MP camera. Find the latest prices in Saudi Arabia, UAE, and Egypt on Wakteey. Below you'll find the full specifications, comparisons, and updated prices for the Asus Zenfone 4 Pro ZS551KL in 2026.
If you're thinking about buying the Asus Zenfone 4 Pro ZS551KL in 2026, here's a quick answer before you decide 👇
⚠️ Warning
This phone is outdated in 2026 and is not recommended for most users.
You can find much better performance at the same price today. 👇
- Smooth daily use ⚡
- Heavy all-day use
- Heavy gaming 🎮
- 5G network users
Final verdict
Asus Zenfone 4 Pro ZS551KL is an outdated phone released in 2017. We don't recommend buying it in 2026 — better options exist at the same price.
Key Specifications
Display
5.5" AMOLED · Hz
Chipset
Qualcomm MSM8998 Snapdragon 835
RAM
6GB
Internal Storage
64GB / 128GB
Main Camera
12MP f/1.7
Capacity
3,600mAh · 18W
OS
ANDROID Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4
Features
Available Colors
Asus Zenfone 4 Pro ZS551KL in detail
Asus Zenfone 4 Pro ZS551KL display
The Asus Zenfone 4 Pro ZS551KL has a 5.5-inch AMOLED display with FHD resolution. Pixel density is 401 ppi, which keeps text and images very sharp.
Performance
It is powered by the Qualcomm MSM8998 Snapdragon 835 (10 nm). RAM goes up to 6 GB. Storage starts at 64 GB and goes up to 128 GB, with a microSD slot.
Camera
The main rear camera is 12 MP with f/1.7 aperture and a 1/2.55" sensor. There are 2 rear cameras in total. The telephoto lens offers 2x optical zoom. Video tops out at 4K@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps. The selfie camera is 8 MP.
Battery & charging
The battery is 3,600 mAh, relatively small, so you may need a top-up during the day. Wired charging is 18W.
Design & software
It weighs 175 g. It runs Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4.
❓Asus Zenfone 4 Pro ZS551KL — Frequently Asked Questions
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