Product
Vivo X21
Vivo X21
Honor V8
Honor V8
Battery
Charging 18W wired -
Type Li-Ion 3200 mAh, non-removable Li-Ion 3500 mAh, non-removable
Body
Build Glass front (Gorilla Glass 3), aluminum back, aluminum frame -
Dimensions 154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in) 157 x 77.6 x 7.8 mm (6.18 x 3.06 x 0.31 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 156.2 g (5.50 oz) 170 g (6.00 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.2, A2DP, LE
Infrared port - Yes
NFC No Yes (KNT-AL10, KNT-AL20)
Positioning GPS, GLONASS GPS, GLONASS, BDS
Radio FM radio No
USB microUSB 2.0, OTG USB Type-C
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, DLNA, Wi-Fi Direct
Display
Protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
Resolution 1080 x 2280 pixels, 19:9 ratio (~402 ppi density) 1080 x 1920 pixels (KNT-AL10, KNT-TL10) (~386 ppi pixel density)1440 x 2560 pixels (KNT-AL20), 16:9 ratio (~515 ppi density)
Size 6.28 inches, 98.4 cm2 (~85.2% screen-to-body ratio) 5.7 inches, 89.6 cm2 (~73.5% screen-to-body ratio)
Type Super AMOLED IPS-NEO LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2018, March. Released 2018, March 2016, May. Released 2016, May
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama Dual-LED dual-tone flash, panorama, HDR
Single - 12 MP, f/2.2, 27mm (wide), 1/2.9", 1.25µm, PDAF 12 MP B/W
Video 1080p@30fps 1080p@60fps, 1080p@30fps, 720p@120fps
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (uses shared SIM slot)
Internal 64GB 6GB RAM, 128GB 6GB RAM 32GB 4GB RAM (AL10,TL10), 64GB 4GB RAM (AL20)
  eMMC 5.1 -
Misc
Colors Black, Aurora White, Ruby Red Silver, Gold, Rose Gold
Models 1725, X21A KNT-AL10, KNT-TL10, KNT-AL20, KNT-UL10
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 1900 / 2100
4G bands 1, 2, 3, 5, 8, 34, 38, 39, 40, 41 1, 3, 4, 7
Speed HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / HSPA / LTE
  CDMA 800 & TD-SCDMA -
Platform
Chipset Qualcomm SDM660 Snapdragon 660 (14 nm) Kirin 950 (16 nm) (KNT-AL10, KNT-TL10)Kirin 955 (16 nm) (KNT-AL20)
CPU Octa-core (4x2.2 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver) Octa-core (4x2.3 GHz Cortex-A72 & 4x1.8 GHz Cortex A53)Octa-core (4x2.5 GHz Cortex-A72 & 4x1.8 GHz Cortex A53)
GPU Adreno 512 Mali-T880 MP4
OS Android 8.1 (Oreo), Funtouch 4 Android 6.0 (Marshmallow), EMUI 4.1
Selfie camera
Single 12 MP, f/2.0, (wide), 1/2.8", 1.28µm 8 MP, f/2.4
Video 1080p@30fps 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  32-bit/192kHz Hi-Res audio -