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Side-by-side comparison

Asus Zenfone 4 Pro ZS551KL vs Asus Zenfone Max (M2) ZB633KL

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 Max (M2) ZB633KL — quick specs

  • Network
    LTE / HSPA / GSM
  • Display
    6.26 inches · 720×1520
  • Camera
    13 MP
  • Memory
    3 GB RAM
  • Battery
    4000 mAh
  • OS
    Android 8.1

● 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), 40(2300)
Speed
AHSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps
BHSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
LAUNCH
Announced
A2017, August
B2018, December
Status
AAvailable. Released 2017, October
BAvailable. Released 2018, December
BODY
Dimensions
A156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in)
B158.4 x 76.3 x 7.7 mm (6.24 x 3.00 x 0.30 in)
Weight
A175 g (6.17 oz)
B160 g (5.64 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
B—
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)
B6.26 inches, 97.8 cm2 (~80.9% screen-to-body ratio)
Resolution
A1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
B720 x 1520 pixels, 19:9 ratio (~269 ppi density)
Protection
ACorning Gorilla Glass 5
B—
PLATFORM
OS
AAndroid 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4
BAndroid 8.1 (Oreo), upgradable to Android 9.0 (Pie)
Chipset
AQualcomm MSM8998 Snapdragon 835 (10 nm)
BQualcomm SDM632 Snapdragon 632 (14 nm)
CPU
AOcta-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo)
BOcta-core (4x1.8 GHz Kryo 250 Gold & 4x1.8 GHz Kryo 250 Silver)
GPU
AAdreno 540
BAdreno 506
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
B32GB 3GB RAM, 64GB 4GB 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";
B13 MP, f/1.8, 1.12µm, PDAF 2 MP, depth sensor"
SELFIE CAMERA
Single
A8 MP, f/1.9, 1/3.2", 22mm (wide), 1.4µm, PDAF"
B8 MP, f/2.0, 1.12µm"
SOUND
Loudspeaker
AYes, dual speakers
BYes
3.5mm jack
AYes 24-bit/192kHz audio DTS sound Active noise cancellation with dedicated mic
BYes Active noise cancellation with dedicated mic
COMMS
WLAN
AWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
BWi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Bluetooth
A5.0, A2DP, EDR, LE, aptX
B4.2, A2DP, LE
GPS
AYes, with A-GPS, GLONASS, BDS, GALILEO
BYes, with A-GPS, GLONASS, BDS
USB
AType-C 1.0 reversible connector
BmicroUSB 2.0, USB On-The-Go
Radio
AFM radio
BFM radio
Infrared port
AYes
B—
NFC
AYes
B—
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
B—
Battery Type
ANon-removable Li-Ion 3600 mAh battery
BNon-removable Li-Ion 4000 mAh battery
MISC
Colors
AMoonlight white, Pure Black
BBlack, Blue
Models
AZ01GD
BX01AD
Price
AAbout 550 USD
B$161.59

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 Max (M2) ZB633KL review →