Entry-level · 2017

Asus Zenfone 4 Pro ZS551KL

Our Take CPU benches near recent entry-level phones like the Samsung Galaxy A13 (SM-A137)

A basic entry-level phone with an AMOLED screen and stabilised camera — but a smaller battery and slow 18W charging show its age.

Best for Streaming · reading · social
Strength AMOLED screen, Stabilised camera (OIS)
Watch out Smaller battery (3600mAh), 18W charging (slow)
Skip if Heavy gaming or multitasking
Compare

Full specifications

What stands out

Pro camera extras: optical zoom, RAW, laser AF, manual focus

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 messaging, calls, and 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

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
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
No

Memory

6 GB RAM · 64 GB · expandable
Tight
RAM
6 GB
Storage
64 GB
Fills fast
Expandable
Yes

Connectivity

4G LTE · NFC · Wi-Fi 5
5G
No
4G LTE
Yes
NFC
Yes
Contactless
Wi-Fi
Wi-Fi 5
Bluetooth
5.0
GPS systems
GPS, A-GPS, GLONASS, Beidou
USB
USB-C
USB OTG
Supported
3.5mm jack
Yes
IR blaster
No
SIM
1× Nano-SIM

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

Specifications sourced from GSMArena

How it stacks up against the rest.

Quick reads against a few phones in the same price tier. Tap any one for the deep comparison.

vs

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
4K @ 30 fps vs 4K @ 60 fps video
Less protected
None vs IP67 protection
vs

Samsung Galaxy S8

Loses on most 1 win 3 losses
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

Where to buy

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