Network
Technology	GSM / HSPA / LTE
2G Bands	GSM 850 / 900 / 1800 / 1900
3G Bands	HSDPA 850 / 900 / 2100
4G Bands	1, 3, 5, 7, 8, 38, 40, 41
Speed	HSPA 21.1/5.76 Mbps, LTE (2CA) Cat7 300/150 Mbps
Launch
Announced	2018, October
Status	Available. Released 2018, November
Body
Dimensions	155.1 x 75 x 7.8 mm (6.11 x 2.95 x 0.31 in)
Weight	143 g (5.04 oz)
Build	Glass front (Gorilla Glass), plastic back, plastic frame
SIM	Nano-SIM + Nano-SIM
Display
Display Type	IPS LCD
Screen Size	6.22 inches, 96.6 cm2 (~83.0% screen-to-body ratio)
Resolution	720 x 1520 pixels, 19:9 ratio (~270 ppi density)
Screen Protection	Corning Gorilla Glass
Platform
Operating System	Android 8.1 (Oreo), Funtouch 4
Chipset	Mediatek MT6761 Helio A22 (12 nm)
CPU	Quad-core 2.0 GHz Cortex-A53
GPU	PowerVR GE8320
Memory
Card Slot	microSDXC (dedicated slot)
Internal Storage	16GB 2GB RAM
Others	eMMC 5.1
Camera
Main Camera	13 MP, f/2.2, PDAF
Features	LED flash, HDR, panorama
Video	1080p@30fps
Selfie Camera	5 MP, f/2.2
Sound
Loudspeaker	Yes
3.5mm Jack	Yes
Connectivity
Wi-Fi	Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Bluetooth	5.0, A2DP, LE
Positioning	GPS, GLONASS, BDS
NFC	No
Radio	FM radio
USB Type	microUSB 2.0, OTG
Features
Sensors	Accelerometer, proximity, compass
Battery
Battery Type	3260 mAh, non-removable
Misc
Available Colors	Black, Red
Models	1812, 1812_19

Vivo Y81i