Asus Zenfone 4 Max ZC554KL vs Asus Zenfone 4 Max ZC520KL

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PHONES
Phone Names Asus Zenfone 4 Max ZC554KL Asus Zenfone 4 Max ZC520KL
Network
2G bandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bandsHSDPA 850 / 900 / 1900 / 2100HSDPA 850 / 900 / 2100
4G bands1, 3, 5, 7, 8, 20, 401, 3, 5, 7, 8, 20, 40
SpeedHSPA 42.2/5.76 Mbps, LTE Cat4 150/50 MbpsHSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
 1, 2, 3, 4, 5, 7, 8, 17, 18, 19, 26, 28, 38, 41 - USA, Canada-
Launch
Announced2017, July. Released 2017, September2017, August. Released 2017, October
StatusDiscontinuedDiscontinued
Body
BuildGlass front (Gorilla Glass), aluminum back, aluminum frame-
Dimensions154 x 76.9 x 8.9 mm (6.06 x 3.03 x 0.35 in)150.5 x 73.3 x 8.8 mm (5.93 x 2.89 x 0.35 in)
SIMNano-SIM + Nano-SIMNano-SIM + Micro-SIM
Weight181 g (6.38 oz)156 g (5.50 oz)
Display
ProtectionCorning Gorilla Glass (unspecified version)-
Resolution720 x 1280 pixels, 16:9 ratio (~267 ppi density)720 x 1280 pixels, 16:9 ratio (~282 ppi density)
Size5.5 inches, 83.4 cm2 (~70.4% screen-to-body ratio)5.2 inches, 74.5 cm2 (~67.6% screen-to-body ratio)
TypeS-IPS LCDIPS LCD
Platform
CPUOcta-core 1.4 GHz Cortex-A53Quad-core 1.4 GHz Cortex-A53
ChipsetQualcomm MSM8937 Snapdragon 430 (28 nm)Qualcomm MSM8917 Snapdragon 425 (28 nm)
GPUAdreno 505Adreno 308
OSAndroid 7 (Nougat), ZenUI 4Android 7 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4
Memory
Card slotmicroSDXC (dedicated slot)microSDXC (dedicated slot)
Internal32GB 3GB RAM16GB 2GB RAM, 32GB 3GB RAM
 eMMC 5.1eMMC 5.1
Main Camera
Dual13 MP, f/2.0, 25mm (wide), AF 13 MP, f/2.0, 12mm, no AF13 MP, AF Auxiliary lens
FeaturesLED flash, HDR, panoramaLED flash, HDR, panorama
Video1080p@30fps1080p@30fps
Selfie camera
FeaturesLED flashLED flash
Single8 MP, f/2.2, 24mm (wide)8 MP
Video-1080p@30fps
Sound
3.5mm jack YesYes
35mm jackYesYes
Loudspeaker YesYes
Comms
Bluetooth4.1, A2DP, LE4.1, A2DP, LE
NFCNoNo
PositioningGPS, GLONASS, BDSGPS, GLONASS
RadioFM radioFM radio
USBmicroUSB 2.0, OTGmicroUSB 2.0, OTG
WLANWi-Fi 802.11 b/g/n, Wi-Fi DirectWi-Fi 802.11 b/g/n, Wi-Fi Direct
Features
SensorsFingerprint (front-mounted), accelerometer, gyro, proximity, compassFingerprint (front-mounted), accelerometer, gyro, proximity, compass
Battery
Charging10W wired Reverse wiredReverse wired
TypeLi-Po 5000 mAh, non-removableLi-Po 4100 mAh, non-removable
Misc
ColorsTitanium Gray, Rose Pink, Sand Gold, Deepsea BlackBlack, Gold, Silver
ModelsX00ID, X00IS, X00HDA, ZC554KLX00HD
PriceAbout 270 EURAbout 180 EUR