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General

NameXiaomi Redmi S2 (Redmi Y2)Vivo Y91-
ModelRedmi S2 (Redmi Y2)Y91-
PriceTK. 14,990Tk. 14,990-

Network

Network TypeGSM / CDMA / HSPA / LTE GSM / HSPA / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA - ChinaGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual-SIM only)-
Network 3GHSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100-
Network 4GLTE band 1(2100), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300)LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 38(2600), 40(2300), 41(2500)-
Network SpeedHSPA, LTEHSPA 42.2/5.76 Mbps, LTE Cat5 150/75 Mbps-
Network GPRSYesYes-
Network EDGEYesYes-

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 6.22 inches, 96.6 cm2 (~82.9% screen-to-body ratio)-
Display Resolution720 x 1440 pixels, 18:9 ratio 720 x 1520 pixels, 19:9 ratio-
Display MultitouchYes - MIUI 9.5Yes-
Display Density269 ppi density 270 ppi density-

Camera

Primary CameraDual: 12 MP (f/2.2, 1.25μm, PDAF) + 5 MP, gyro-EIS, phase detection autofocus, LED Flash13MP
2MP, Depth Sensor
-
Secondary Camera16 MP, HDR, LED Flash 8MP, f/1.8-
Camera FeaturesGeo-tagging, Touch focus, Face detection, Panorama, HDRLED Flash, Panorama-
Video[email protected] [email protected]-

Body

Body Dimensions160.7 x 77.3 x 8.1 mm (6.33 x 3.04 x 0.32 in)155.1 x 75.1 x 8.3 mm (6.11 x 2.96 x 0.33 in)-
Body Weight170 g (6.00 oz) 163.5 g-
Body BuildFront glass, plastic body--
Body ColorGray, Gold, Rose Gold Ocean Blue, Starry Black-

Launch

Launch AnnouncementMay, 2018January. 2019-
Launch DateReleased May, 2018Released January. 2019-

Platform

Operating SystemAndroid 8.1 (Oreo) Android 8.1 (Oreo)-
CPUOcta-core 2.0 GHz Cortex-A53 Octa-core 2.0 GHz Cortex-A53-
GPUAdreno 506 PowerVR GE8320-
ChipsetQualcomm MSM8953 Snapdragon 625 Mediatek MT6762 Helio P22-

Memory

Memory Internal32 GB, 64 GB 64GB-
Memory ExternalmicroSD, up to 256 GB (dedicated slot) microSD, up to 256GB-
Ram3 GB, 4 GB 3GB-

Battery

Battery TypeNon-removable Li-Po Battery Non-removable Li-Po Battery -
Battery Capacity3080 mAh 4030 mAh Battery-

Multimedia

Fm RadioYes Yes-

Sound

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

Connectivity

WiFiWi-Fi 802.11 b/g/n, WiFi Direct, Hotspot Wi-Fi 802.11 b/g/n, WiFi Direct, Hotspot-
Bluetooth4.2, A2DP, LE 5.0, A2DP, LE-
USBmicroUSB 2.0 microUSB 2.0, USB On-The-Go-
GPSYes, with A-GPS, GLONASS, BDS Yes, with A-GPS, GLONASS, BDS-

Features

SensorsFingerprint-rear-mounted, accelerometer, gyro, proximity, compass Fingerprint -rear-mounted, accelerometer, proximity, compass-
MessagingSMS(threaded view), MMS, Email, Push Email, IM SMS(threaded view), MMS, Email, Push Email, IM-
BrowserHTML5 HTML5-
JavaNo No-

Other

Made ByChina China-
Other FeaturesMP4/H.265 player, MP3/WAV/eAAC+/FLAC player, Photo/video editor Document viewer 5V/2A 10W charging Photo/video editor-