Mid-range · 2017

Asus Zenfone 4 Pro ZS551KL

Nobody owns this yet

Our Take

CPU benches near recent entry-level phones like the Samsung Galaxy A14 Camera shares the Motorola Moto Z2 Play's main sensor

Best for

Strength Stabilised camera (OIS), AMOLED screen

Extras Optical zoom, Curved display

Watch out No more updates, 18W charging (slow)

Skip if Heavy gaming or multitasking

5.5″ AMOLED · 60Hz

835 6 / 64 GB

3600 mAh 18W charging

16 MP 2 rear · 8 MP selfie

4G LTE NFC

Compare

Full specifications

Display

5.5″ · AMOLED · 1080 × 1920 · 60 Hz · HDR

OLED display

A clean OLED panel — colours pop and sunlight visibility is solid.

Screen size

5.5"

Panel type

AMOLED

OLED

Resolution

1080 × 1920 px

Refresh rate

60 Hz

Slow for 2026

HDR

Supported

Protection

Corning Gorilla Glass 5

Performance

Qualcomm MSM8998 Snapdragon 835 (10 nm) · 8-core 2.45 GHz · Adreno 540

Basic CPU

Best for calls, messaging, and very light browsing. Avoid heavy multitasking.

Chipset

Qualcomm MSM8998 Snapdragon 835 (10 nm)

Current CPU tier

Entry-level

Launch class

Mid-range

AnTuTu

175,256

CPU

8-core, 2.45 GHz

GPU

Adreno 540

Process

10 nm

CPU layout

4x Kryo 280 2.45 GHz + 4x Kryo 280 1.9 GHz

Software & updates

Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4 · 1-year support

End of life

This phone is past its update window — it still works, but new Android versions and most security patches have stopped.

Operating system

Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4

Software support

1 years of updates

Updates remaining

None — past its update window

Camera

12 MP f/1.7 main · OIS · 8 MP selfie · 4K video

OIS + 4K

Stabilised main camera holds up in low light. Front camera is fine for daylight selfies.

Main camera

12 MP f/1.7

OIS

Telephoto

16 MP

Front camera

8 MP f/1.9

Main sensor

Sony IMX362 Exmor RS, 1/2.55", 1.4µm

Mainstream sensor

Same sensor in

Motorola Moto Z2 Play , Google Pixel 2

Slow motion

Yes, 120 fps

Camera extras

optical zoom, RAW, laser AF, manual focus

Video

4K @ 30 fps

4K video

Battery

3600 mAh · 18 W wired

Battery is average for the class — fine for daily use.

Capacity

3600 mAh

Wired charging

18 W

Slow for 2026

Removable

Memory

6 GB RAM · 64 GB · expandable

Tight

RAM

6 GB

Storage

64 GB

Fills fast

Configurations

6/64GB · 6/128GB

Expandable

Yes

Connectivity

4G LTE · NFC · Wi-Fi 5

4G LTE

Yes

NFC

Yes

Contactless

Wi-Fi

Wi-Fi 5

Bluetooth

5.0

GPS systems

GPS, A-GPS, GLONASS, Beidou

USB

USB-C 2.0

USB OTG

Yes

3.5mm jack

Yes

IR blaster

SIM

1× Nano-SIM

Network bands

4G works on all four carriers — no 5G

Radio bands decide whether this phone sees MTN, Glo, Airtel or 9mobile towers — and how strong the signal holds indoors.

M MTN

4G full · no 5G

Full

A Airtel

4G full · no 5G

Full

G Glo

4G works No B28 — signal can get weak indoors and outside the big cities.

Works

9 9mobile

4G full

Full

The bands Nigerian networks use

B3 main band

M A G 9

B7 extra speed

B20 indoor reach

B28 indoor reach

n78 the 5G band

M A

The dots show which network uses each band. ✓ means this phone has it, ✗ means it doesn't.

All reported bands

2G B2, B3, B5, B8

3G B1, B2, B5, B8, B20

4G B1, B2, B3, B5, B7, B8, B12, B17, B18, B19, B20, B26, B28b, B28a

Build & Design

175 g · 7.6 mm

Height

156.9 mm

Width

75.6 mm

Thickness

7.6 mm

Weight

175 g

Sensors

Fingerprint (front-mounted) · accelerometer · gyro · proximity

Sensors

Fingerprint (front-mounted), accelerometer, gyro, proximity, compass

Images and battery life estimates from GSMArena

How it stacks up against the rest.

A few phones around the same price, so you can see what this one does better and what it gives up.

Apple iPhone X

Loses on most 1 win 4 losses

33% larger battery capacity

3,600 mAh vs 2,716 mAh battery

Lower-resolution screen

1080 × 1920 vs 1125 × 2436 resolution

Lower benchmark score

175k vs 598k AnTuTu · Entry-level vs Mid-range tier

Lower video ceiling

Telephoto vs Telephoto · OIS · 4K @ 30 fps vs 4K @ 60 fps video

Less protected

None vs IP67 protection

Full comparison

Samsung Galaxy S8

Trades blows 2 wins 3 losses

Better camera hardware

Telephoto vs —

20% larger battery capacity

3,600 mAh vs 3,000 mAh battery

Lower-resolution screen

AMOLED vs Super AMOLED panel · 1080 × 1920 vs 1440 × 2960 resolution

Lower benchmark score

175k vs 202k AnTuTu

Less protected

None vs IP68 protection · 175 g vs 155 g

Full comparison

Where to buy

We don't have any listings for this phone yet. Try searching on Konga or Jiji.

Search on Konga Search on Jiji

Similar Phones

How each one compares to the Asus Zenfone 4 Pro ZS551KL.

Upper mid-range

Asus Zenfone 4 Pro ZS551KL

Full specifications

Display

Performance

Software & updates

Camera

Battery

Memory

Connectivity

Network bands

The bands Nigerian networks use

All reported bands

Build & Design

Sensors

How it stacks up against the rest.

Apple iPhone X

Samsung Galaxy S8

Where to buy

Similar Phones

Asus Zenfone AR ZS571KL

Samsung Galaxy S7 edge

Samsung Galaxy S7 edge (USA)

OnePlus 3T