Product
Vivo V21 5G
Vivo V21 5G
Samsung Galaxy A8 (2016)
Samsung Galaxy A8 (2016)
Battery
Charging 33W wired, 63% in 30 min -
Music play - Up to 44 h
Talk time - Up to 22 h (3G)
Type 4000 mAh Li-Ion 3300 mAh, non-removable
Body
Build Glass front, plastic frame, plastic back Glass front, aluminum back, aluminum frame
Dimensions 159.7 x 73.9 x 7.3 mm (6.29 x 2.91 x 0.29 in) 156.6 x 76.8 x 7.2 mm (6.17 x 3.02 x 0.28 in)
SIM Nano-SIM + Nano-SIM Nano-SIMNano-SIM + Nano-SIM
Weight 176 g (6.21 oz) 182 g (6.42 oz)
Comms
Bluetooth 5.1, A2DP, LE 4.1, A2DP, EDR, LE
NFC Yes (market/region dependent) Yes
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS/ BDS (market dependant)
Radio No FM radio, RDS, recording
USB USB Type-C 2.0, OTG microUSB 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct
Display
Resolution 1080 x 2400 pixels, 20:9 ratio (~409 ppi density) 1080 x 1920 pixels, 16:9 ratio (~386 ppi density)
Size 6.44 inches, 100.1 cm2 (~84.8% screen-to-body ratio) 5.7 inches, 89.6 cm2 (~74.5% screen-to-body ratio)
Type AMOLED, 90Hz, HDR10+, 500 nits (typ) Super AMOLED
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Fingerprint (front-mounted), accelerometer, proximity, compass
  - ANT+
Launch
Announced 2021, April 27 2016, September. Released 2016, October
Status Available. Released 2021, May 06 Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, panorama, HDR
Single - 16 MP, f/1.9, AF
Triple 64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF, OIS 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) -
Video 4K@30fps (no OIS), 1080p@30/60fps 1080p@30fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
Internal 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM 32GB 3GB RAM
  UFS 2.2 eMMC 5.1
Misc
Colors Dusk Blue, Sunset Dazzle, Arctic White Blue, Pink, Silver, Gold
Models V2050 SM-A8100, SM-A810F, SM-A810F, SM-A810YZ, SM-A810S
SAR 1.05 W/kg (head)     0.87 W/kg (body)     -
SAR EU - 0.13 W/kg (head)     1.17 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM model only)
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 8, 34, 38, 40, 41 - India 1, 3, 5, 7, 8, 28, 38 - Taiwan
5G bands 78 Sub6 - India -
Speed HSPA, LTE, 5G HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / HSPA / LTE / 5G GSM / HSPA / LTE
  - 1, 3, 5, 7, 8, 20, 40 - UAE
Our Tests
Battery (old) Endurance rating 123h -
Camera Photo / Video -
Display 761 nits max brightness (measured) -
Loudspeaker -28.2 LUFS (Average) -
Performance AnTuTu: 336699 (v8), 365055 (v9) GeekBench: 6516 (v4.4), 1600 (v5.1) GFXBench: 17fps (ES 3.1 onscreen) -
Platform
Chipset Mediatek Dimensity 800U (7 nm) Exynos 7420 Octa (14 nm)
CPU Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55) Octa-core (4x2.1 GHz Cortex-A57 & 4x1.5 GHz Cortex-A53)
GPU Mali-G57 MC3 Mali-T760MP8
OS Android 11, Funtouch 11.1 Android 6.0.1 (Marshmallow)
Selfie camera
Features Dual-LED flash, HDR -
Single 44 MP, f/2.0, (wide), AF, OIS 8 MP, f/1.9
Video 4K@30fps (no OIS), 1080p@30fps 1080p@30fps
Sound
3.5mm jack No Yes
Loudspeaker Yes Yes