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General

NameVivo X21iXiaomi Black Shark-
ModelX21iBlack Shark-

Network

Network TypeGSM / CDMA / HSPA / LTEGSM / CDMA / HSPA / EVDO / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMAGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA-
Network 3GHSDPA 850 / 900 / 2100HSDPA 850 / 900 / 1900 / 2100 CDMA2000 1xEV-DO-
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)LTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)-
Network SpeedHSPA, LTEHSPA, LTE-A (3CA)-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeSuper AMOLED capacitive touchscreen, 16M ColorsIPS LCD capacitive touchscreen, 16M Colors-
Display Size6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio5.99 inches, 92.6 cm2 (~76.0% screen-to-body ratio-
Display Resolution1080 x 2280 pixels, 19:9 ratio1080 x 2160 pixels, 18:9 ratio-
Display MultitouchYes - Funtouch OS 4.0Yes - 97% DCI-P3 coverage-
Display Density402 ppi density403 ppi density-

Camera

Primary Camera12MP (f/1.8, 1/2.5Dual: 12 MP (f/1.8, 1.25 µm) + 20 MP (f/1.8, 1.0 µm), 2x optical zoom, dual pixel phase detection autofocus, dual-LED dual-tone Flash-
Secondary Camera24MP20 MP, (f/2.2, 1.0 µm), 1080p-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaGeo-tagging, Touch focus, Face detection, HDR, panorama-
Video[email protected][email protected], [email protected], [email protected]-

Body

Body Dimensions154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)161.6 x 75.4 x 9.3 mm (6.36 x 2.97 x 0.37 in)-
Body Weight159 g (5.61 oz)190 g (6.70 oz)-
Body ColorBlack, Aurora White, Ruby RedBlack, Gray-

Launch

Launch AnnouncementMay, 2018April, 2018-
Launch DateRelease May 19th, 2018Release April 20th, 2018-

Platform

Operating SystemAndroid 8.1 OreoAndroid 8.0 Oreo-
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.8 GHz Kryo 385 Silver)-
GPUMali-G72 MP3Adreno 630-
ChipsetMediatek MT6771 Helio P60Qualcomm SDM845 Snapdragon 845-

Memory

Memory Internal64GB, 128GB64 GB, 128 GB-
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot)No-
Ram4GB, 6GB 6 GB , 8 GB -

Battery

Battery TypeNon-removable Li-Ion BatteryNon-removable Li-Ion Battery-
Battery Capacity3425 mAh 4000 mAh -

Multimedia

Fm RadioYesNo-

Sound

AudioVibration, MP3, WAV RingtonesVibration, MP3, WAV Ringtones-
LoudspeakerYesYes, with Stereo Speakers-
3.5mm JackYes - 32-bit/192kHz audio - Active noise cancellation with dedicated micNo - Active noise cancellation with dedicated mic - 3.5 mm to USB-C headphone adapter incl-

Connectivity

WiFiWi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, HotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, Hotspot-
Bluetooth5.0, A2DP, LEBluetooth 5.0-
USBmicroUSB 2.0, USB On-The-Go2.0, Type-C 1.0 reversible connector-
GPSYes, with A-GPS, GLONASSYes, with A-GPS, GLONASS, BDS-

Features

SensorsFingerprint-rear-mounted, accelerometer, proximity, compassFingerprint-front-mounted, accelerometer, gyro, proximity, compass-
MessagingSMS(threaded view), MMS, Email, Push EmailSMS(threaded view), MMS, Email, Push Email, IM-
BrowserHTML5HTML5-
JavaNoNo-

Other

Made ByChinaChina-
Other FeaturesFast battery charging, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editorFast battery charging 9V/2A (Quick Charge 3.0) ,XviD/MP4/H.265 player MP3/WAV/eAAC+/Flac player, Photo/video editor Document viewer-