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vivo X9 vs vivo NEX Dual Display

 
Brief information about compared phones: vivo NEX Dual Display , vivo X9

vivo NEX Dual Display 2018 year of release, cpu Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver), screen 6.39", with resolution 1080x2340. Smartphone has 12 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 Super AMOLED Super AMOLED
Touchscreen capacitive touchscreen capacitive touchscreen
Display colors 16M 16M
Screen size 6.39" inch 5.5" inch
Screen area 100.2 cm2 83.4 cm2
Screen format 19.5:9 (height:width) 16:9 (height:width)
Screen to body ratio 84.7% 73.8%
Screen resolution 1080 x 2340 px 1080 x 1920 px
PPI /points per inch/ 403 PPI 401 PPI
Screen protection Corning Gorilla Glass 5
Camera and Video Rear camera, main 12 MP, Triple 16 MP, Single
Camera specs 12 MP, f/1.8, 1/2.55'', 1.4µm, 4-axis OIS, Dual Pixel PDAF -2 MP, depth sensor -TOF camera, f/1.3 16 MP, PDAF, f/2.0
Functions LED flash, HDR, panorama LED flash, panorama, HDR
Video 2160p@30fps, 1080p@30fps 1080p@30fps
Front camera, selfie 12 MP, Triple 20 MP, Dual
Specifications Uses main cameras 20 MP, f/2.0, 1/2.8'' 8 MP
Performance Operating system OS Android 9.0 (Pie); Funtouch 4.5 Android 6.1 (Marshmallow), upgradable to Android 8 (Oreo); Funtouch 3
Chipset Qualcomm SDM845 Snapdragon 845 (10 nm) Qualcomm MSM8953 Snapdragon 625 (14 nm)
Processor CPU Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) Octa-core 2.0 GHz Cortex-A53
Graphics processor GPU Adreno 630 Adreno 506
External memory No No
Internal memory 128 GB, 10 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
Antutu 8 score 340355
GeekBench 5 Single Core 167
GeekBench 5 Multi-Core 1011
General specs Release date 2018, December 2016, November
Dimensions (HxWxD) 157.2 Х 75.3 Х 8.1 mm 152.6 Х 74 Х 7 mm
Weight 199 g 154 g
Colors Polar Blue Gold, Rose Gold
Battery 3500 mAh,  Non-removable Li-Ion 3050 mAh,  Non-removable Li-Ion
Approximate price 700 EUR 460 EUR
Communication and Connectivity SIM card 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  CDMA 800 -3G - HSDPA 850 / 900 / 1900 / 2100 -4G - LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 19(800), 28(700), 38(2600), 39(1900), 40(2300), 41(2500) 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 (4CA) Cat16 1024/150 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, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
GPS Yes, with A-GPS, BDS, GNSS Yes, with A-GPS
NFC
USB 2.0, Type-C 1.0 reversible connector, USB On-The-Go microUSB 2.0, USB Host
Bluetooth 5.0, A2DP, LE 4.2, A2DP, LE
Music and Audio Radio No No
Headphone jack Yes Yes
Others Secondary display (on the back): -Super AMOLED, 5.49 inches, 1080 x 1920 pixels 32-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features Dop Sensors Fingerprint (under display), accelerometer, gyro, proximity, compass - Fast battery charging 10V/2.25A 22.5W Sensors Fingerprint (front-mounted), accelerometer, proximity, compass - Fast battery charging

An overview of the main advantages of each of the devices

Reasons to buy NEX Dual Display
  • Screen 6.39"
  • Front camera 12 MP
Reasons to buy X9
  • Screen 5.5"
  • Front camera 20 MP
  • Main camera 16 MP
  • Internal memory 512 GB