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General

NameVivo X21iOppo A3-
ModelX21iA3-
Price-Tk. 14,500-

Network

Network TypeGSM / CDMA / HSPA / LTEGSM / CDMA / HSPA / 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
HSDPA 850 / 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)LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)-
Network SpeedHSPA, LTEHSPA, LTE-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeSuper AMOLED capacitive touchscreen, 16M ColorsLTPS IPS LCD capacitive touchscreen, 16M Colors-
Display Size6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio6.2 inches, 96.9 cm2 (~82.5% screen-to-body ratio)-
Display Resolution1080 x 2280 pixels, 19:9 ratio1080 x 2280 pixels, 19:9 ratio-
Display MultitouchYes - Funtouch OS 4.0Yes - Color OS 5.0-
Display Density402 ppi density405 ppi density-

Camera

Primary Camera12MP (f/1.8, 1/2.516 MP (f/1.8), phase detection autofocus, LED Flash-
Secondary Camera24MP8 MP (f/2.2)-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaGeo-tagging, Touch focus, Face detection, 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)156 x 75.3 x 7.8 mm (6.14 x 2.96 x 0.31 in)-
Body Weight159 g (5.61 oz)159 g (5.61 oz)-
Body ColorBlack, Aurora White, Ruby RedKnight Black, Soybean Meal, Stardust Silver, Garne-

Launch

Launch AnnouncementMay, 2018April, 2018 -
Launch DateRelease May 19th, 2018release May, 2018-

Platform

Operating SystemAndroid 8.1 OreoAndroid 8.1 Oreo-
CPUOcta-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53)-
GPUMali-G72 MP3Mali-G72 MP3-
ChipsetMediatek MT6771 Helio P60Mediatek Helio P60-

Memory

Memory Internal64GB, 128GB128 GB-
Memory ExternalmicroSD, up to 256GB (uses SIM 2 slot)microSD, up to 256 GB (dedicated slot)-
Ram4GB, 6GB 4 GB -

Battery

Battery TypeNon-removable Li-Ion BatteryNon-removable Li-Ion Battery-
Battery Capacity3425 mAh 3400 mAh Battery-

Multimedia

Fm RadioYesYes-

Sound

AudioVibration, MP3, WAV RingtonesVibration, 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 b/g/n/ac, dual-band, WiFi Direct, Hotspot-
Bluetooth5.0, A2DP, LE4.2, A2DP, LE-
USBmicroUSB 2.0, USB On-The-GomicroUSB 2.0, USB On-The-Go-
GPSYes, with A-GPS, GLONASSYes, with A-GPS-

Features

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

Other

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