Product
Vivo Y91 (Mediatek)
Vivo Y91 (Mediatek)
₹12,271
Xiaomi Redmi 8
Xiaomi Redmi 8
₹11,016
Battery
Charging - 18W wired
Type 4030 mAh, non-removable Li-Po 5000 mAh, non-removable
Body
Build - Glass front (Gorilla Glass 5), plastic back, plastic frame
Dimensions 155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 in) 156.5 x 75.4 x 9.4 mm (6.16 x 2.97 x 0.37 in)
SIM Nano-SIMNano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 163.5 g (5.78 oz) 188 g (6.63 oz)
  - Water-repellent coating
Comms
Bluetooth 5.0, A2DP, LE 4.2, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, BDS
Radio FM radio Wireless FM radio (no wired headphones required)
USB microUSB 2.0, OTG USB Type-C 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct Wi-Fi 802.11 b/g/n, Wi-Fi Direct
Display
Protection - Corning Gorilla Glass 5
Resolution 720 x 1520 pixels, 19:9 ratio (~270 ppi density) 720 x 1520 pixels, 19:9 ratio (~270 ppi density)
Size 6.22 inches, 96.6 cm2 (~82.9% screen-to-body ratio) 6.22 inches, 96.6 cm2 (~81.8% screen-to-body ratio)
Type IPS LCD IPS LCD, 400 nits (typ)
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (rear-mounted), accelerometer, proximity, compass
Launch
Announced 2019, January. Released 2019, January 2019, October 09. Released 2019, October 12
Status Discontinued Discontinued
Main Camera
Dual 13 MP, f/2.2, PDAF 2 MP, f/2.4, (depth) -
Features LED flash, panorama LED flash, HDR, panorama
Single - 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 2 MP, (depth)
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC microSDXC (dedicated slot)
Internal 64GB 3GB RAM 32GB 3GB RAM, 64GB 4GB RAM
  eMMC 5.1 eMMC 5.1
Misc
Colors Starry Black, Ocean Blue Onyx Black, Ruby Red, Sapphire Blue, Phantom Red
Models - M1908C3IC, MZB8255IN, M1908C3IG, M1908C3IH
SAR - 0.34 W/kg (head)     1.00 W/kg (body)    
SAR EU - 0.23 W/kg (head)     1.48 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - Global
4G bands 1, 3, 5, 7, 8, 38, 40, 41 1, 2, 3, 4, 5, 7, 8, 20, 38, 40 - Global
Speed HSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps HSPA, LTE
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  - 1, 3, 5, 8, 40, 41 - India
Platform
Chipset Mediatek MT6762 Helio P22 (12 nm) Qualcomm SDM439 Snapdragon 439 (12 nm)
CPU Octa-core 2.0 GHz Cortex-A53 Octa-core (4x1.95 GHz Cortex-A53 & 4x1.45 GHz Cortex A53)
GPU PowerVR GE8320 Adreno 505
OS Android 8.1 (Oreo), Funtouch 4.5 Android 9.0 (Pie), upgradable to Android 10, MIUI 12
Selfie camera
Features - HDR
Single 8 MP, f/1.8 8 MP, f/2.0, 1/4.0", 1.12µm
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
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