vivo X21
VS
Samsung Galaxy A8 (2018)
VS
Screen

We are looking at the smartphone screen for a long time. Therefore, it is quite important to choose smartphone with rich and optimally saturated color gamut. Also, the most mature display technology used in smartphones must be safe (e.g., IPS or OLED).  Which is better between vivo X21 vs Samsung Galaxy A8 (2018).

Super AMOLED
Technology
Super AMOLED
capacitive touchscreen
Touchscreen
capacitive touchscreen
16M
Display colors
16M
6.28" inc
Screen size
5.6" inc
98.4 cm2
Screen area
79.6 cm2
19:9 (height:width)
Screen format
18.5:9 (height:width)
85.2%
Screen to body ratio
75.6%
1080 x 2280 px
Screen resolution
1080 x 2220 px
402 PPI
PPI /points per inch/
441 PPI
no data
Screen protection
Corning Gorilla Glass (unspecified version)
no data
Other
Always-on display
Camera and Video

The smartphone camera plays significant role - it is one of several factors that determine the quality of a digital photo. When compare the smartphones, it is necessary to account megapixels on sensors of the primary and front facing cameras, and also availability of the flash and video-shooting option. Let's see which is better between vivo X21 vs  Samsung Galaxy A8 (2018).

12 MP, Dual
Rear camera, main
16 MP, Single
12 MP, f/1.8, 1/2.55'', 1.4µm, dual pixel PDAF -5 MP, f/2.4, depth sensor
Camera specs
16 MP, f/1.7, 26mm (wide), 1/2.8”, 1.12µm, PDAF
LED flash, HDR, panorama
Functions
LED flash, panorama, HDR
12 MP, Single
Front camera, selfie
16 MP, Dual
12 MP, f/2.0
Specifications
16 MP, f/1.9, 27mm (wide), 1/3.1'', 1.0µm 8 MP, f/1.9, 24mm (wide), 1/4'', 1.12µm
Performance

Ok, who win? vivo X21 vs Samsung Galaxy A8 (2018). The smartphone must work fast. The higher the clock speed and the more RAM your smartphone has, the faster and better it can be. Also, you have to pay attention to the benchmark results. 

Android 8.1 (Oreo); Funtouch 4
Operating system OS
Android 7.1.1 (Nougat), upgradable to Android 8.0 (Oreo)
Qualcomm SDM660 Snapdragon 660 (14 nm)
Chipset
Exynos 7885 Octa (14 nm)
Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)
Processor CPU
Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53)
Adreno 512
Graphics processor GPU
Mali-G71
microSD, up to 256 GB (uses SIM 2 slot)
External memory
microSD, up to 256 GB (dedicated slot)
64/128 GB, 6 GB RAM
Internal memory
32/64 GB, 4 GB RAM
143728
Antutu 7 score
116745
1806
GeekBench 4 Single Core
1482
4240
GeekBench 4 Multi-Core
4208
no data
GeekBench 4 RenderScript
3704
no data
Antutu 8 score
142851
no data
GeekBench 5 Single Core
309
no data
GeekBench 5 Multi-Core
994
General specs

Here is some information we have collected – from date of release and battery capacity to weight and color gamut of the smartphones. It is time to pick the winner. What is the difference between vivo X21 vs Samsung Galaxy A8 (2018).

2018, March
Release date
2017, December
154.5 Х 74.8 Х 7.4 mm
Dimensions (HxWxD)
149.2 Х 70.6 Х 8.4 mm
156.2 g
Weight
172 g
Black, Aurora White, Ruby Red
Colors
Black, orchid grey, gold, blue
3200 mAh,  Non-removable Li-Ion
Battery
3000 mAh,  Non-removable Li-Ion
450 EUR
Approximate price
270 EUR
no data
Battery life
Talking time- Up to 24 h (3G) Music play - Up to 66 h
Front glass, aluminum body
Body build
Front/back glass, aluminum frame
Communication and Connectivity

As a result of comparison vivo X21 and Samsung Galaxy A8 (2018) , you understand what device is better and what is worst. Below are parameters and data sets which were used for analysis and comparison.

Hybrid Dual SIM (Nano-SIM, dual stand-by)
SIM card
Single SIM (Nano-SIM)Dual SIM (Nano-SIM, dual stand-by)
GSM / CDMA / HSPA / LTE
Network
GSM / HSPA / LTE
HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps
Speed
HSPA 42.2/5.76 Mbps, LTE-A (3CA) Cat11 600/75 Mbps
Yes
GPRS
Yes
Yes
Edge
Yes
Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
Yes, with A-GPS, GLONASS
GPS
Yes, with A-GPS, GLONASS, BDS
NFC
Yes
microUSB 2.0, USB On-The-Go
USB
2.0, Type-C 1.0 reversible connector
5.0, A2DP, LE
Bluetooth
5.0, A2DP, EDR, LE
no data
Harmful irradiation
SAR EU - 0.24 W/kg (head)     1.25 W/kg (body)    
Music and Audio
FM radio
Radio
FM radio
Yes
Headphone jack
Yes
32-bit/192kHz audio -Active noise cancellation with dedicated mic
Others
24-bit/192kHz audio -Active noise cancellation with dedicated mic
Other features
Sensors - Fingerprint (rear-mounted), accelerometer, proximity, compass - Fast battery charging
Sensors - Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer - Fast battery charging -ANT+ - Samsung Pay -IP68 dust/water proof (up to 1.5m for 30 mins) - Versions: A530F (Europe, Global Single-SIM); A530F/DS (Global Dual-SIM

COMMENTS

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