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General

NameXiaomi Redmi S2 (Redmi Y2)Allview Viva Home-
ModelRedmi S2 (Redmi Y2)Viva Home-
PriceTK. 14,990Tk 24,000-

Network

Network TypeGSM / CDMA / HSPA / LTE No cellular connectivity-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA - China--
Network 3GHSDPA 850 / 900 / 1900 / 2100--
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300)--
Network SpeedHSPA, LTE--
Network GPRSYes--
Network EDGEYes--

Display

Display TypeIPS LCD capacitive touchscreen, 16M Colors IPS LCD capacitive touchscreen, 16M colors-
Display Size5.99 inches, 92.6 cm2 (~74.5% screen-to-body ratio 17.3 inches, 825.1 cm2 (~74.0% screen-to-body ratio)-
Display Resolution720 x 1440 pixels, 18:9 ratio 1080 x 1920 pixels, 16:9 ratio (~127 ppi density)-
Display MultitouchYes - MIUI 9.5Yes-
Display Density269 ppi density--

Camera

Primary CameraDual: 12 MP (f/2.2, 1.25μm, PDAF) + 5 MP, gyro-EIS, phase detection autofocus, LED Flash--
Secondary Camera16 MP, HDR, LED Flash2MP-
Camera FeaturesGeo-tagging, Touch focus, Face detection, Panorama, HDR--
Video[email protected]--

Body

Body Dimensions160.7 x 77.3 x 8.1 mm (6.33 x 3.04 x 0.32 in) 418.5 x 266.3 x 19.5 mm (16.48 x 10.48 x 0.77 in)-
Body Weight170 g (6.00 oz) 2018.3 g (4.45 lb)-
Body BuildFront glass, plastic body--
Body ColorGray, Gold, Rose GoldBlack-

Launch

Launch AnnouncementMay, 2018July,2019-
Launch DateReleased May, 2018Released July,2019-

Platform

Operating SystemAndroid 8.1 (Oreo) Android 9.0 (Pie)-
CPUOcta-core 2.0 GHz Cortex-A53Quad-core 1.5 GHz Cortex-A53-
GPUAdreno 506--
ChipsetQualcomm MSM8953 Snapdragon 625Mediatek MT8163-

Memory

Memory Internal32 GB, 64 GB 32GB -
Memory ExternalmicroSD, up to 256 GB (dedicated slot) microSD, up to 128GB (dedicated slot)-
Ram3 GB, 4 GB 2GB-

Battery

Battery TypeNon-removable Li-Po Battery Non-removable Li-Po-
Battery Capacity3080 mAh 5000 mAh-

Multimedia

Fm RadioYesYes-

Sound

AudioVibration, MP3, WAV Ringtones Vibration, MP3, WAV ringtones-
LoudspeakerYesYes-
3.5mm JackYes - Active noise cancellation with dedicated micYes-

Connectivity

WiFiWi-Fi 802.11 b/g/n, WiFi Direct, HotspotWi-Fi 802.11 a/b/g/n-
Bluetooth4.2, A2DP, LE 4.0, A2DP-
USBmicroUSB 2.0 microUSB 2.0, USB-
GPSYes, with A-GPS, GLONASS, BDS Yes, with A-GPS-

Features

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

Other

Made ByChinaChina-
Other FeaturesMP4/H.265 player, MP3/WAV/eAAC+/FLAC player, Photo/video editor Document viewer 5V/2A 10W chargingColor:Black-