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vivo X9 vs Asus Zenfone 4 Pro ZS551KL

 
Brief information about compared phones: Asus Zenfone 4 Pro ZS551KL , vivo X9

Asus Zenfone 4 Pro ZS551KL 2017 year of release, cpu Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo), screen 5.5", with resolution 1080x1920. Smartphone has 8 megapixel front camera and 12 megapixel main camera.

vivo X9 2016 year of release, cpu Octa-core 2.0 GHz Cortex-A53, screen 5.5", with resolution 1080x1920. Smartphone has 20 megapixel front camera and 16 megapixel main camera.

Display Technology AMOLED Super AMOLED
Touchscreen capacitive touchscreen capacitive touchscreen
Display colors 16M 16M
Screen size 5.5" inch 5.5" inch
Screen area 83.4 cm2 83.4 cm2
Screen format 16:9 (height:width) 16:9 (height:width)
Screen to body ratio 70.3% 73.8%
Screen resolution 1080 x 1920 px 1080 x 1920 px
PPI /points per inch/ 401 PPI 401 PPI
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 5
Camera and Video Rear camera, main 12 MP, Dual 16 MP, Single
Camera specs 12 MP, f/1.7, 25mm (wide), 1/2.55'', 1.4µm, 4-axis OIS, dual pixel PDAF & laser AF -16 MP, 50mm (telephoto), 1/3.1'', 1.0µm, 2x optical zoom, AF 16 MP, PDAF, f/2.0
Functions HDR LED flash, panorama, HDR
Video 1080p@30fps 1080p@30fps
Front camera, selfie 8 MP, Single 20 MP, Dual
Specifications 8 MP, f/1.9, 1/3.2'', 22mm (wide), 1.4µm, PDAF 20 MP, f/2.0, 1/2.8'' 8 MP
Performance Operating system OS Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo); ZenUI 4 Android 6.1 (Marshmallow), upgradable to Android 8 (Oreo); Funtouch 3
Chipset Qualcomm MSM8998 Snapdragon 835 (10 nm) Qualcomm MSM8953 Snapdragon 625 (14 nm)
Processor CPU Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU Adreno 540 Adreno 506
External memory microSD, up to 512 GB (uses SIM 2 slot) No
Internal memory 64/128 GB, 6 GB RAM 64/128 GB, 512GB 4GB
Antutu 7 score 60123
GeekBench 4 Single Core 852
GeekBench 4 Multi-Core 3965
GeekBench 4 RenderScript 3081
GeekBench 5 Single Core 167
GeekBench 5 Multi-Core 1011
General specs Release date 2017, August 2016, November
Dimensions (HxWxD) 156.9 Х 75.6 Х 7.6 mm 152.6 Х 74 Х 7 mm
Weight 175 g 154 g
Colors Moonlight White, Pure Black Gold, Rose Gold
Battery 3600 mAh,  Non-removable Li-Ion 3050 mAh,  Non-removable Li-Ion
Approximate price 390 EUR 460 EUR
Battery life Talking time- Up to 27 h 30 min (3G)
Body build Front/back glass (Gorilla Glass 5) & aluminum frame
Communication and Connectivity SIM card Hybrid Dual SIM (Nano-SIM, dual stand-by) Dual SIM (Nano-SIM, dual stand-by)
Network Show all network frequencies: -2G - GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 -3G - HSDPA 800 / 850 / 900 / 1700(AWS) / 1800 / 1900 / 2100 -4G - LTE 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) - Global, Taiwan  LTE band 1(2100), 12(700), 18(800), 26(850), 29(700), 30(2300), 41(2500) - US, Canada, Brazil  LTE band 1(2100), 41(2500) - India Show all network frequencies: -2G - GSM 900 / 1800 - SIM 1 & SIM 2 -3G - HSDPA 850 / 900 / 1900 / 2100   CDMA2000 1x & TD-SCDMA -4G - LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)
Speed HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat12 600/150 or 100 Mbps HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps
GPRS Yes Yes
Edge Yes Yes
Wi-Fi Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
GPS Yes, with A-GPS, GLONASS, BDS, GALILEO Yes, with A-GPS
NFC Yes
USB Type-C 1.0 reversible connector microUSB 2.0, USB Host
Bluetooth 5.0, A2DP, EDR, LE, aptX 4.2, A2DP, LE
Music and Audio Radio FM radio No
Headphone jack Yes Yes
Others 24-bit/192kHz audio -DTS sound -Active noise cancellation with dedicated mic 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features Dop Sensors Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, color spectrum , Infrared port - Fast battery charging: 50% in 32 min Sensors Fingerprint (front-mounted), accelerometer, proximity, compass - Fast battery charging

An overview of the main advantages of each of the devices

Reasons to buy Zenfone 4 Pro ZS551KL
  • Screen 5.5"
  • Front camera 8 MP
  • External memory microSD GB
Reasons to buy X9
  • Screen 5.5"
  • Front camera 20 MP
  • Main camera 16 MP
  • Internal memory 512 GB