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General

NameVivo X21iXiaomi Redmi Note 9 Pro Max-
ModelX21iRedmi Note 9 Pro Max-
Price-Tk 18,000-

Network

Network TypeGSM / CDMA / HSPA / LTE GSM / HSPA / LTE-
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 / 1900 / 2100-
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), 5(850), 8(900), 40(2300), 41(2500)-
Network SpeedHSPA, LTEHSPA 42.2/5.76 Mbps, LTE-A-
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 6.67 inches, 107.4 cm2 (~84.6% screen-to-body ratio)-
Display Resolution1080 x 2280 pixels, 19:9 ratio 1080 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 5 450 nits typ. brightness (advertised)-

Camera

Primary Camera12MP (f/1.8, 1/2.564MP, f/1.9, (wide), 1/1.72
8MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm
2MP, f/2.4, (macro), 1/5.0", 1.75µm
2MP, f/2.4, (depth)"
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Secondary Camera24MP32MP, (wide), 1/2.8-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaLED flash, HDR, panorama HDR, panorama-
Video[email protected][email protected], [email protected]/60/120fps, [email protected], gyro-EIS [email protected]-

Body

Body Dimensions154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in) 165.5 x 76.7 x 8.8 mm (6.52 x 3.02 x 0.35 in)-
Body Weight159 g (5.61 oz) 209 g (7.37 oz)-
Body ColorBlack, Aurora White, Ruby Red Aurora Blue, Glacier White, Interstellar Black-
Body Build- Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), plastic frame-

Launch

Launch AnnouncementMay, 2018March 12, 2020-
Launch DateRelease May 19th, 2018Release March 25, 2020-

Platform

Operating SystemAndroid 8.1 Oreo Android 10.0; MIUI 11-
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver)-
GPUMali-G72 MP3Adreno 618-
ChipsetMediatek MT6771 Helio P60Qualcomm SM7125 Snapdragon 720G (8 nm)-

Memory

Memory Internal64GB, 128GB 64GB, 128GB -
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot) microSDXC (dedicated slot)-
Ram4GB, 6GB 6GB, 8GB-

Battery

Battery TypeNon-removable Li-Ion Battery Non-removable Li-Po-
Battery Capacity3425 mAh 5020 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 5.0, A2DP, LE-
USBmicroUSB 2.0, USB On-The-Go Yes, with A-GPS, GLONASS, GALILEO, BDS, NavIC-
GPSYes, with A-GPS, GLONASS 2.0, Type-C 1.0 reversible connector-

Features

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

Other

Made ByChinaChina-
Other FeaturesFast battery charging, MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editorFast charging 33W, 50% in 30 min (advertised)-