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Asus Zenfone 4 Pro ZS551KL Specifications
Asus
Released 2017, Aug 15
6 GB RAM · Qualcomm MSM8998 Snapdragon 835 (10 nm)
- 175g, 7.6mm thickness
- Android 7.1.1, up to Android 8, ZenUI 4
- 64GB/128GB storage, microSDXC
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Genze vs community
Genze and community ratings are both shown on a /10 scale. Genze is derived from internal model scores and price rules; community averages come from approved reviews (1–10 per category).
| Category | Genze /10 | Users /10 |
|---|---|---|
| Battery | 7 | — |
| Display | 6.6 | — |
| Performance | 6.8 | — |
| Camera | 8.1 | — |
| Body | 6 | — |
| Gaming | 6.7 | — |
| Software | 4.4 | — |
| Connectivity | 2.5 | — |
| Sensors | 7.2 | — |
| Software updates | — | — |
| Clean software | — | — |
| Heating | — | — |
| Media | — | — |
Community columns fill in when reviews are approved.
Quick specifications
5.5"
1080x1920 pixels
16MP
2160p
6GB RAM
Snapdragon 835
3600mAh
18W
Score breakdown
From specs, price tier & release year
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Full specifications
|
Network
|
Technology | GSM / HSPA / LTE |
|---|---|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 | |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 17, 19, 20, 28, 38, 39, 40, 41 - Global, Taiwan | |
| ??? | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 30, 38, 39, 41 - US, Canada, Brazil | |
| ??? | 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 30, 38, 39, 40, 41 - India | |
| Speed | HSPA 42.2/5.76 Mbps, LTE (3CA) Cat12 600/150 or 100 Mbps |
|
Launch
|
Announced | 2017, August. Released 2017, October |
|---|---|---|
| Status | Discontinued |
|
Body
|
Dimensions | 156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in) |
|---|---|---|
| Weight | 175 g (6.17 oz) | |
| Build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame | |
| SIM | Nano-SIM + Nano-SIM |
|
Display
|
Type | AMOLED |
|---|---|---|
| Size | 5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio) | |
| Resolution | 1080 x 1920 pixels, 16:9 ratio (~401 ppi density) | |
| Protection | Corning Gorilla Glass 5 |
|
Platform
|
OS | Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4 |
|---|---|---|
| Chipset | Qualcomm MSM8998 Snapdragon 835 (10 nm) | |
| CPU | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | |
| GPU | Adreno 540 |
|
Memory
|
Card slot | microSDXC (uses shared SIM slot) |
|---|---|---|
| Internal | 64GB 6GB RAM, 128GB 6GB RAM |
|
Main Camera
|
Dual | 12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4??m, dual pixel PDAF, 4-axis OIS 16 MP, 50mm (telephoto), 1/3.1", 1.0??m, AF, 2x optical zoom |
|---|---|---|
| Features | Laser AF, color spectrum sensor, LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps |
|
Selfie camera
|
Single | 8 MP, f/1.9, 22mm (wide), 1/3.2", 1.4??m, PDAF |
|---|---|---|
| Features | HDR | |
| Video | 1080p@30fps |
|
Sound
|
Loudspeaker | Yes, dual speakers |
|---|---|---|
| 3.5mm jack | Yes | |
| ??? | 24-bit/192kHz audio |
|
Comms
|
WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
|---|---|---|
| Bluetooth | 5.0, A2DP, EDR, LE, aptX | |
| Positioning | GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Infrared port | Yes | |
| Radio | FM radio | |
| USB | USB Type-C 2.0, OTG |
|
Features
|
Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass |
|---|
|
Battery
|
Type | Li-Ion 3600 mAh, non-removable |
|---|---|---|
| Charging | 18W wired, 50% in 32 min | |
| Talk time | Up to 27 h 30 min (3G) |
|
Misc
|
Colors | Moonlight white, Pure Black |
|---|---|---|
| Models | Z01GD, Z01GS | |
| Price | About 350 EUR |
Asus Zenfone 4 Pro ZS551KL official images
Frequently asked questions
Is Asus Zenfone 4 Pro ZS551KL worth buying in 2026?
Asus Zenfone 4 Pro ZS551KL is worth considering if its strengths match your priorities. Genze scores it 6.4/10 for its class. Read owner reviews and compare alternatives before you buy.
Is Asus Zenfone 4 Pro ZS551KL good for gaming?
Asus Zenfone 4 Pro ZS551KL scores 67/100 on our gaming index (chipset, display smoothness, and thermals). Casual and mid-tier titles usually run well; for competitive esports, compare frame stability and heating against phones in the same price band.
What is the battery capacity of Asus Zenfone 4 Pro ZS551KL?
Asus Zenfone 4 Pro ZS551KL has a 3,600 mAh battery. Real-world endurance depends on chipset efficiency, display, and usage.
What display size does Asus Zenfone 4 Pro ZS551KL have?
Asus Zenfone 4 Pro ZS551KL features a 5.50-inch display. See the Display section for resolution, refresh rate, and panel details.
How much RAM does Asus Zenfone 4 Pro ZS551KL have?
Asus Zenfone 4 Pro ZS551KL is available with 6 GB RAM variants. Storage options are listed in the Memory section.
What is the Genze score for Asus Zenfone 4 Pro ZS551KL?
Genze rates Asus Zenfone 4 Pro ZS551KL 6.4/10 based on performance, display, camera, battery, body build, and value versus phones in the same price tier.
Where do these specifications come from?
Specifications are compiled from official manufacturer and carrier sources, reviewed by our editors where possible, and enriched with Genze scores and community feedback. GenZe Rank is not responsible for errors or omissions. Regional variants, firmware updates, and retailer listings may differ from what is shown here—always confirm critical details on the official product page before you buy.
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