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General

NameVivo X21iWalton Primo N4-
ModelX21iPrimo N4-
Price-Tk 10,000-

Network

Network TypeGSM / CDMA / HSPA / LTE 2G / 3G / 4G / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA2G (GSM/GPRS/EDGE 850/900/1800/1900 MHz)-
Network 3GHSDPA 850 / 900 / 21003G (UMTS 850/900/2100 MHz)-
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 8(900), 38(2600), 39(1900), 40(2300), 41(2500)4G (LTE FDD 800/850/900/1800/2100/2600 MHz), (TDD 2300/2500/2600MHz)-
Network SpeedHSPA, LTE HSPA+, 4G LTE-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeSuper AMOLED capacitive touchscreen, 16M Colors IPS LCD capacitive touchscreen, 16M colors-
Display Size6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio 6.5 inches, 102.0 cm2 (~82.4% screen-to-body ratio)-
Display Resolution1080 x 2280 pixels, 19:9 ratio 720 x 1600 pixels, 19:9 ratio (~266 ppi density)-
Display MultitouchYes - Funtouch OS 4.0Yes-
Display Density402 ppi density--

Camera

Primary Camera12MP (f/1.8, 1/2.516MP, f/1.8, PDAF
8MP, f/2.0, (ultrawide)
2MP, f/2.2, depth sensor
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Secondary Camera24MP13MP, f/2.2, PDAF-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaLED flash, HDR, panorama-
Video[email protected][email protected]-

Body

Body Dimensions154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in) 164.3 x 75.8 x 8.5 mm-
Body Weight159 g (5.61 oz) 184.2 g (6.49 oz)-
Body ColorBlack, Aurora White, Ruby Red Sea Green-

Launch

Launch AnnouncementMay, 2018 March, 2020-
Launch DateRelease May 19th, 2018Release March, 2020-

Platform

Operating SystemAndroid 8.1 Oreo Android 9. (Pie)-
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)Octa-Core 2.0 GHz-
GPUMali-G72 MP3Mali-G71 MP2-
ChipsetMediatek MT6771 Helio P60ARM Cortex-A53-

Memory

Memory Internal64GB, 128GB 32GB, 64GB-
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot) microSD, up to 64GB-
Ram4GB, 6GB 3GB, 4GB LPDDR4x-

Battery

Battery TypeNon-removable Li-Ion Battery Non-removable Li-Po-
Battery Capacity3425 mAh 4000 mAh -

Multimedia

Fm RadioYesYes-

Sound

AudioVibration, MP3, WAV Ringtones Vibration, MP3, WAV ringtones-
LoudspeakerYesYes-
3.5mm JackYes - 32-bit/192kHz audio - Active noise cancellation with dedicated micYes-

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, LE 4.0, A2DP, LE-
USBmicroUSB 2.0, USB On-The-Go 2.0, Type-C 1.0 reversible connector-
GPSYes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS, BDS-

Features

SensorsFingerprint-rear-mounted, accelerometer, proximity, compassFingerprint -rear-mounted, Face ID, accelerometer, gyro, proximity, compass-
MessagingSMS(threaded view), MMS, Email, Push Email SMS(threaded view), MMS, Email, IM-
BrowserHTML5 HTML5-
JavaNoNo-

Other

Made ByChinaBangladesh-
Other FeaturesFast battery charging, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editorOTG supported Online Themes Ambient Display Smart Control-