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Side-by-side comparison

Asus Zenfone 4 Pro ZS551KL vs Asus Zenfone 6 ZS630KL

Asus Zenfone 4 Pro ZS551KL — quick specs

  • Network
    LTE / HSPA / GSM
  • Display
    5.5 inches · 1080×1920
  • Camera
    12 MP
  • Memory
    6 GB RAM
  • Battery
    3600 mAh
  • OS
    Android 7.1

Asus Zenfone 6 ZS630KL — quick specs

  • Network
    LTE / HSPA / GSM
  • Display
    6.4 inches · 1080×2340
  • Camera
    48 MP
  • Memory
    6 GB RAM
  • Battery
    5000 mAh
  • OS
    Android 9.0

● Full specification comparison

NETWORK
Technology
AGSM / HSPA / LTE
BGSM / HSPA / LTE
2G bands
AGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
BGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands
AHSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100
BHSDPA 850 / 900 / 1900 / 2100
4G bands
ALTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 17(700), 19(800), 20(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500)
BLTE band 1(2100), 2(1900), 3(1800), 5(850), 7(2600), 8(900), 20(800), 28(700), 38(2600), 40(2300), 41(2500)
Speed
AHSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps
BHSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat18 1200/150 Mbps
LAUNCH
Announced
A2017, August
B2019, May
Status
AAvailable. Released 2017, October
BAvailable. Released 2019, May
BODY
Dimensions
A156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in)
B159.1 x 75.4 x 9.2 mm (6.26 x 2.97 x 0.36 in)
Weight
A175 g (6.17 oz)
B190 g (6.70 oz)
SIM
AHybrid Dual SIM (Nano-SIM, dual stand-by)
BDual SIM (Nano-SIM, dual stand-by)
Build
AFront/back glass (Gorilla Glass 5) & aluminum frame
BFront glass (Gorilla Glass 6), back glass (Gorilla Glass), aluminum frame
DISPLAY
Type
AAMOLED capacitive touchscreen, 16M colors
BIPS LCD capacitive touchscreen, 16M colors
Size
A5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio)
B6.4 inches, 100.5 cm2 (~83.8% screen-to-body ratio)
Resolution
A1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
B1080 x 2340 pixels, 19.5:9 ratio (~403 ppi density)
Protection
ACorning Gorilla Glass 5
BCorning Gorilla Glass 6, DCI-P3 100% HDR10
PLATFORM
OS
AAndroid 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4
BAndroid 9.0 (Pie), ZenUI 6
Chipset
AQualcomm MSM8998 Snapdragon 835 (10 nm)
BQualcomm SDM855 Snapdragon 855 (7 nm)
CPU
AOcta-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
BOcta-core (1x2.84 GHz Kryo 485 & 3x2.42 GHz Kryo 485 & 4x1.78 GHz Kryo 485)
GPU
AAdreno 540
BAdreno 640
MEMORY
Card slot
AmicroSD, up to 1 TB (uses shared SIM slot)
BmicroSD, up to 1 TB (dedicated slot)
Internal
A64GB 6GB RAM, 128GB 6GB RAM
B64GB 6GB RAM, 128GB 6GB RAM, 256GB 8GB RAM
MAIN CAMERA
Dual
A12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, Laser AF, 4-axis OIS 16 MP, 50mm (telephoto), 1/3.1", 1.0µm, AF, 2x optical zoom";
B48 MP, f/1.8, 26mm (wide), 1/2", 0.8µm, PDAF, Laser AF 13 MP, f/2.4, 11mm (ultrawide)"
SELFIE CAMERA
Single
A8 MP, f/1.9, 1/3.2", 22mm (wide), 1.4µm, PDAF"
B—
Features
A—
BDual-LED flash, HDR, auto panorama (motorized rotation)
Video
A—
B2160p@30/60fps, 1080p@30/60/240fps, 1080p@30fps, 720p@480fps; gyro-EIS (except @240/480fps)
Dual
A—
BMotorized flip-up main camera module
SOUND
Loudspeaker
AYes, dual speakers
BYes, with stereo speakers
3.5mm jack
AYes 24-bit/192kHz audio DTS sound Active noise cancellation with dedicated mic
BYes 24-bit/192kHz audio Active noise cancellation with dedicated mic DTS Headphone X
COMMS
WLAN
AWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
BWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
Bluetooth
A5.0, A2DP, EDR, LE, aptX
B5.0, A2DP, LE, aptX HD
GPS
AYes, with A-GPS, GLONASS, BDS, GALILEO
BYes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS
USB
AType-C 1.0 reversible connector
B2.0, Type-C 1.0 reversible connector
Radio
AFM radio
BFM radio
Infrared port
AYes
B—
NFC
AYes
BYes
FEATURES
Sensors
AFingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum
BFingerprint (rear-mounted), accelerometer, gyro, proximity, compass
BATTERY
Charging
AFast battery charging 18W: 50% in 32 min
BFast battery charging 18W (Quick Charge 4.0) Power bank/Reverse charging 10W
Battery Type
ANon-removable Li-Ion 3600 mAh battery
BNon-removable Li-Po 5000 mAh battery
MISC
Colors
AMoonlight white, Pure Black
BMidnight Black, Twilight Silver
Models
AZ01GD
BASUS_I01WD, ZS630KL, I01WD
Price
AAbout 550 USD
BAbout 543 USD

Cells highlighted in green indicate a measurably better spec on that phone (battery capacity, RAM, storage, display size). Text-only specs are shown side by side without highlighting.

Full Asus Zenfone 4 Pro ZS551KL review →Full Asus Zenfone 6 ZS630KL review →