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General

NameVivo X21iAsus Zenfone 7 ZS670KS-
ModelX21iZenfone 7 ZS670KS-
Price-Tk 68,000-

Network

Network TypeGSM / CDMA / HSPA / LTEGSM / HSPA / LTE / 5G-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMAGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-
Network 3GHSDPA 850 / 900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100-
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 29, 38, 39, 40, 41-
Network SpeedHSPA, LTEHSPA 42.2/5.76 Mbps, LTE-A (5CA) Cat19 1800/150 Mbps, 5G 3.6 Gbps DL-
Network GPRSYesYes-
Network EDGEYesYes-
Network 5G-1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 SA/NSA-

Display

Display TypeSuper AMOLED capacitive touchscreen, 16M ColorsSuper AMOLED capacitive touchscreen, 16M colors-
Display Size6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio6.67 inches, 107.4 cm2 (~84.2% screen-to-body ratio)-
Display Resolution1080 x 2280 pixels, 19:9 ratio1080 x 2400 pixels, 20:9 ratio (~395 ppi density)-
Display MultitouchYes - Funtouch OS 4.0Yes-
Display Density402 ppi density--
Display Screen Protection-Corning Gorilla Glass 6-

Camera

Primary Camera12MP (f/1.8, 1/2.564MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF
8MP, f/2.4, 80mm (telephoto), PDAF, 3x optical zoom
12MP, f/2.2, 113˚, 17mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF
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Secondary Camera24MPMotorized flip-up main camera module-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaDual-LED flash, HDR, auto panorama (motorized rotation) Dual-LED flash, HDR, auto panorama (motorized rotation)-
Video[email protected][email protected], [email protected]/60/120fps, [email protected]/60/240fps, [email protected]; gyro-EIS, HDR-

Body

Body Dimensions154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in)165.1 x 77.3 x 9.6 mm (6.5 x 3.04 x 0.38 in)-
Body Weight159 g (5.61 oz)230 g (8.11 oz)-
Body ColorBlack, Aurora White, Ruby RedAurora Black, Pastel White-
Body Build-Glass front (Gorilla Glass 6), glass back (Gorilla Glass 3), aluminum frame-

Launch

Launch AnnouncementMay, 20182020, August 26-
Launch DateRelease May 19th, 20182020, September 01-

Platform

Operating SystemAndroid 8.1 OreoAndroid 10, ZenUI 7-
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.80 GHz Kryo 585)-
GPUMali-G72 MP3Adreno 650-
ChipsetMediatek MT6771 Helio P60Qualcomm SM8250 Snapdragon 865 (7 nm+)-

Memory

Memory Internal64GB, 128GB128GB UFS 3.1-
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot)microSDXC (dedicated slot)-
Ram4GB, 6GB 6GB, 8GB-

Battery

Battery TypeNon-removable Li-Ion BatteryNon-removable Li-Po-
Battery Capacity3425 mAh 5000 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 24-bit/192kHz audio-

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, Wi-Fi Direct, hotspot-
Bluetooth5.0, A2DP, LE5.0, A2DP, LE, aptX HD-
USBmicroUSB 2.0, USB On-The-GoType-C 1.0 reversible connector-
GPSYes, with A-GPS, GLONASSYes, with dual-band A-GPS, GLONASS, BDS, GALILEO, QZSS-

Features

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

Other

Made ByChinaTaiwan-
Other FeaturesFast battery charging, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editor--