The Nokia 8.1 comes with 4/6 GB of RAM and 64/128 GB of internal memory which can be expanded via microSD. The Nokia 8.1 boasts of the 12/13-megapixels dual rear camera and 20-megapixels front camera for selfies and video calling.
The Vivo NEX Dual Display comes with 10 GB of RAM and 128 GB of internal memory which can be expanded via microSD. The Vivo NEX Dual Display boasts of the 12/2-megapixels rear camera plus TOF 3D camera and no front camera but use main camera for selfies and video calling.
Vivo NEX Dual Display
|
Nokia 8.1
|
|
Brand and Model
|
Brand and Model
|
|
Brand
|
Vivo
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Nokia
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Model
|
NEX Dual Display
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8.1
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Model Alias
|
NEX Dual Screen
|
TA-1131
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V1821T
|
||
V1821A
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||
SIM Card
|
SIM Card
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|
SIM Card Type
|
Nano-SIM (4FF-fourth form factor, since 2012, 12.30 x 8.80 x
0.67 mm)
|
Nano-SIM (4FF-fourth form factor,since 2012, 12.30 x 8.80 x 0.67
mm)
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Nano-SIM / microSD
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||
Number of SIM Cards
|
2
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2
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Features
|
Dual SIM stand-by
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|
Networks
|
Networks
|
|
Network
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GSM / LTE / UMTS / TD-SCDMA / CDMA
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GSM / LTE / UMTS
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Mobile Network Technology and Bandwidth
|
Mobile Network Technology and Bandwidth
|
|
Mobile Network Technologies
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UMTS (384 kbit/s)
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UMTS (384 kbit/s)
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EDGE
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EDGE
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GPRS
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GPRS
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HSPA+
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HSPA+
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LTE Cat 16 (150 Mbit/s, 1 Gbit/s)
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LTE Cat 6 (51.0 Mbit/s, 301.5 Gbit/s)
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EV-DO Rev. A (1.8 Mbit/s, 3.1 Mbit/s)
|
||
TD-SCDMA
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||
TD-HSDPA
|
||
Operating System
|
Operating System
|
|
Operating System (OS)
|
Funtouch 4.5 OS (Android 9.0 Pie)
|
Android 9.0 Pie
|
System on Chip (SOC)
|
System on Chip (SOC)
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SOC
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Qualcomm Snapdragon 845
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Qualcomm Snapdragon 710
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Process Technology
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10 nm
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10 nm
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CPU
|
4x 2.8 GHz Kryo 385
|
2x 2.2 GHz Kryo 360
|
4x 1.8 GHz Kryo 385
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6x 1.7 GHz Kryo 360
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|
CPU Bits
|
64 bits
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64 bits
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Instruction Set
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ARMv8-A
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ARMv8
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CPU Frequency
|
2800 MHz
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2200 MHz
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CPU Cores
|
8
|
8
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GPU
|
Qualcomm Adreno 630
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Qualcomm Adreno 616
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RAM Capacity
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4 GB
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|
10 GB
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6 GB
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RAM Type
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LPDDR4X
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LPDDR4X
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RAM Channels
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Double channel
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Double channel
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RAM Frequency
|
1866 MHz
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1866 MHz
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Storage
|
Storage
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Storage
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128 GB
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64 GB
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128 GB
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||
Memory Cards
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Memory Cards
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|
Types
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microSD
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microSD
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microSDHC
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microSDHC
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microSDXC
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microSDXC
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Display
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Display
|
|
Type / Technology
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Super AMOLED
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IPS
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Diagonal Size
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6.39 in
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6.18 in
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162.31 mm
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156.97 mm
|
|
16.23 cm
|
15.7 cm
|
|
Width
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2.68 in
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2.65 in
|
68.02 mm
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67.2 mm
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6.8 cm
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6.72 cm
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Height
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5.8 in
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5.59 in
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147.37 mm
|
141.86 mm
|
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14.74 cm
|
14.19 cm
|
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Aspect Ratio
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2.167:1
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2.111:1
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Resolution
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1080 x 2340 pixels
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1080 x 2280 pixels
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Pixel Density
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403 ppi
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408 ppi
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158 ppcm
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160 ppcm
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Color Depth
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24 bits
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24 bits
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16777216 colors
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16777216 colors
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|
Display Area
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84.96 %
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81.55 %
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Other Features
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Capacitive
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Capacitive
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Multi-touch
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Multi-touch
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Scratch resistant
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Full Lamination Technology
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COF (Chip-On-Flex)
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1500:1 contrast ratio
|
|
500 cd/m square
|
||
96% NTSC
|
||
HDR10
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||
Secondary Display
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||
Type / Technology
|
Super AMOLED
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|
Diagonal Size
|
5.49 in
|
|
Resolution
|
1080 x 1920 pixels
|
|
2.5D curved glass screen
|
||
Sensors
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Sensors
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Sensors
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Proximity
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Proximity
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Light
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Light
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Accelerometer
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Accelerometer
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Compass
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Compass
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Gyroscope
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Gyroscope
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Fingerprint
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Fingerprint
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Hall
|
||
In-display fingerprint sensor
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Primary Camera
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Primary Camera
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Sensor type
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CMOS
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CMOS
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Aperture
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f/1.79
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f/1.8
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Flash Type
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Dual LED
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Dual LED
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Image Resolution
|
4032 x 3024 pixels
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4032 x 3024 pixels
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12.19 MP
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12.19 MP
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Video resolution
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3840 x 2160 pixels
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3840 x 2160 pixels
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8.29 MP
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8.29 MP
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Video FPS
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30 fps
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30 fps
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Features
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Autofocus
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Autofocus
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Continuous shooting
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Continuous shooting
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Digital zoom
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Digital zoom
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Optical zoom
|
||
Optical image stabilization
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Optical image stabilization
|
|
Geotagging
|
Geotagging
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Panorama
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Panorama
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HDR
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HDR
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Touch focus
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Touch focus
|
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Face detection
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Face detection
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White balance setting
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White balance setting
|
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ISO setting
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ISO setting
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Exposure compensation
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Exposure compensation
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Self-timer
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Self-timer
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Scene mode
|
Scene mode
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Sensor size - ½.55”
|
Sensor size – ½.55”
|
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Pixel size - 1.4 um
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Pixel size- 1.4 um
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Phase detection with Dual Pixel
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Phase detection with Dual Pixel
|
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Carl Zeiss lens
|
||
High CRI LED flash
|
||
Focal length (35 mm equivalent) – 25 mm
|
||
Wide angle – 80 degree
|
||
Secondary rear camera - 2 MP
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Secondary rear camera- 13 MP
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Aperture size - f/1.8 (#2)
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Aperture size- f/2.2 (#2)
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Pixel size - 2.9 um (#2)
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Carl Zeiss lens (#2)
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TOF (Time of Flight) 3D camera
|
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Aperture size - f/1.3 (#TOF)
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||
Face unlock
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Secondary Camera
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Secondary Camera
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Sensor Type
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No - uses main camera
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Aperture
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f/1.2
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Image Resolution
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5120 x 3840 pixels
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19.66 MP
|
||
Video Resolution
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1920 x 1080 pixels
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2.07 MP
|
||
Video FPS
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30 fps
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Pixel size – 1.8 um (4-in-1 pixel binning)
|
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Carl Zeiss lens
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||
Audio
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Audio
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Speaker
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Loudspeaker
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Loudspeaker
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Earpiece
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Earpiece
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Asahi Kasei AK4377A
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OZO Audio
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Radio
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Radio
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Radio
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No
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Yes
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Tracking / Positioning
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Tracking / Positioning
|
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Tracking / Positioning
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GPS
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GPS
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A-GPS
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A-GPS
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GLONASS
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GLONASS
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BeiDou
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BeiDou
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Wi-Fi
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Wi-Fi
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Wi-Fi
|
802.11a (IEEE 802.11a-1999)
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802.11a (IEEE 802.11a-1999)
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802.11b (IEEE 802.11b-1999)
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802.11b (IEEE 802.11b-1999)
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802.11g (IEEE 802.11g-1999)
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802.11g (IEEE 802.11g-1999)
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802.11n (IEEE 802.11n-2003)
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802.11n (IEEE 802.11n-2003)
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802.11n 5GHz
|
802.11n 5GHz
|
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802.11ac (IEEE 802.11ac)
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802.11ac (IEEE 802.11ac)
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|
Dual band
|
Dual band
|
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Wi-Fi Hotspot
|
Wi-Fi Hotspot
|
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Wi-Fi Direct
|
Wi-Fi-Direct
|
|
2x2 MiMO
|
||
Bluetooth
|
Bluetooth
|
|
Version
|
5.0
|
5.0
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Features
|
A2DP
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A2DP
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USB
|
USB
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|
Version
|
USB Type-C
|
USB Type-C
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Features
|
2.0
|
2.0
|
Charging
|
Charging
|
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Mass Storage
|
Mass Storage
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On-The-Go
|
On-The-Go
|
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Headphone Jack
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Headphone Jack
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|
Headphone Jack
|
No
|
Yes
|
Connectivity
|
Connectivity
|
|
Connectivity
|
Computer sync
|
Computer sync
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OTA sync
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OTA sync
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Tethering
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Tethering
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VoLTE
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VoLTE
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NFC
|
||
VoWiFi
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Browser
|
Browser
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|
Browser
|
HTML
|
HTML
|
HTML5
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HTML5
|
|
CSS 3
|
CSS 3
|
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Audio File Formats / Codecs
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Audio File Formats / Codecs
|
|
Audio File Formats / Codecs
|
AAC
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AAC
|
AAC+ / aaPlus / HE-AAC v1
|
||
AMR / AMR-NB / GSM-AMR
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AMR / AMR-NB / GSM-AMR
|
|
AMR-WB
|
AMR-WB
|
|
eAAC+ / aacPlus v2 / HE-AAC v2
|
eAAC+ / aacPlus v2 / HE-AAC v2
|
|
FLAC
|
FLAC
|
|
M4A
|
||
MIDI
|
MIDI
|
|
MP3
|
MP3
|
|
OGG
|
OGG
|
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WMA
|
WMA
|
|
WAV
|
WAV
|
|
Video File Formats / Codecs
|
Video File Formats / Codecs
|
|
Video File Formats / Codecs
|
3GPP
|
3GPP
|
AVI
|
AVI
|
|
DivX
|
||
Flash Video
|
||
H.263
|
H.263
|
|
H.264 / MPEG-4 Part 10 / AVC video
|
H.264 / MPEG-4 Part 10 / AVC Video
|
|
H.265 / MPEG-H Part 2 / HEVC
|
||
MKV
|
MKV
|
|
MP4
|
MP4
|
|
WebM
|
||
WMV
|
WMV
|
|
Xvid
|
Xvid
|
|
Battery
|
Battery
|
|
Capacity
|
3500 MAh
|
3500 mAh
|
Type
|
Li-Polymer
|
Li-Polymer
|
Features
|
Non-removable
|
Non-removable
|
Fast charging
|
Fast charging
|
|
Launch
|
Launch
|
|
Announced
|
2018, December
|
2018, December
|
Status
|
Exp. Release Dec. 2018
|
Exp. Release Dec. 2018
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Price
|
Price
|
|
Price
|
About 725 $
|
About 450 $
|
Design
|
Design
|
|
Colors
|
Blue
|
Black
|
Blue
|
||
Red
|
Silver
|
|
Copper
|
||
Width
|
75.3 mm
|
75.76 mm
|
7.53 cm
|
7.58 cm
|
|
0.25 ft
|
0.25 ft
|
|
2.96 in
|
2.98 in
|
|
Height
|
157.19 mm
|
154.8 mm
|
15.72 cm
|
15.48 cm
|
|
0.52 ft
|
0.51 ft
|
|
6.19 in
|
6.09 in
|
|
Thickness
|
8.09 mm
|
7.97 mm
|
0.81 cm
|
0.8 cm
|
|
0.03 ft
|
0.03 ft
|
|
0.32 in
|
0.31 in
|
|
Weight
|
199 g
|
180 g
|
0.44 lbs
|
0.4 lbs
|
|
7.03 oz
|
6.35 oz
|
|
Volume
|
95.76 cm3
|
93.47 cm3
|
5.82 in3
|
5.68 in3
|
|
Body Materials
|
Aluminium alloy
|
Aluminium alloy
|
Glass
|
Glass
|
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