Product
Vivo X21i
Vivo X21i
₹43,971
Xiaomi Mi A2 Lite (Redmi 6 Pro)
Xiaomi Mi A2 Lite (Redmi 6 Pro)
₹38,909
Battery
Charging 18W wired 10W wired
Type Li-Ion 3425 mAh, non-removable Li-Po 4000 mAh, non-removable
Body
Build - Glass front, aluminum back, aluminum frame
Dimensions 154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in) 149.3 x 71.7 x 8.8 mm (5.88 x 2.82 x 0.35 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + Nano-SIM
Weight 159 g (5.61 oz) 178 g (6.28 oz)
Comms
Bluetooth 5.0, A2DP, LE 4.2, A2DP, LE
Infrared port - Yes
NFC No No
Positioning GPS, GLONASS GPS, GLONASS, BDS
Radio FM radio FM radio (after SW update to Android 9.0)
USB microUSB 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 2280 pixels, 19:9 ratio (~402 ppi density) 1080 x 2280 pixels, 19:9 ratio (~432 ppi density)
Size 6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio) 5.84 inches, 85.1 cm2 (~79.5% screen-to-body ratio)
Type Super AMOLED IPS LCD
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (rear-mounted), accelerometer, gyro, proximity, compass
Launch
Announced 2018, May. Released 2018, May 2018, July. Released 2018, July
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) 12 MP, f/2.2, 1.25 μm, PDAF 5 MP, f/2.2, (depth)
Features LED flash, HDR, panorama LED flash, HDR, panorama
Video 1080p@30fps 1080p@30fps (gyro-EIS)
Memory
Card slot microSDXC (uses shared SIM slot) microSDXC (dedicated slot)
Internal 64GB 6GB RAM, 128GB 4GB RAM 32GB 3GB RAM, 64GB 4GB RAM
  eMMC 5.1 eMMC 5.1
Misc
Colors Black, Aurora White, Ruby Red, Night Purple Black, Blue, Gold, Rose Gold, Red
Models X21i A M1805D1SG
SAR - 1.04 W/kg (head)     1.15 W/kg (body)    
SAR EU - 0.55 W/kg (head)     1.47 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 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 20, 38, 40 - Global
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / LTE
  CDMA 800 & TD-SCDMA 1, 3, 5, 7, 8, 34, 38, 39, 40, 41 - China
Our Tests
Audio quality - Noise -90.3dB / Crosstalk -93.1dB
Battery (old) - Endurance rating 106h
Camera - Photo / Video
Display - Contrast ratio: 1268:1 (nominal), 3.087 (sunlight)
Loudspeaker - Voice 70dB / Noise 74dB / Ring 86dB
Performance - AnTuTu: 77964 (v7) GeekBench: 4388 (v4.4) GFXBench: 3.4fps (ES 3.1 onscreen)
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Qualcomm MSM8953 Snapdragon 625 (14 nm)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Octa-core 2.0 GHz Cortex-A53
GPU Mali-G72 MP3 Adreno 506
OS Android 8.1 (Oreo), Funtouch 4 Android 8.1 (Oreo), upgradable to Android 10, MIUI 12, Android One
Selfie camera
Features - HDR
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 5 MP, f/2.0
Video 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
  32-bit/192kHz Hi-Res audio -
Offers No offers available No offers available