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General

NameXiaomi Redmi S2 (Redmi Y2)Xiaomi Mi Band 4-
ModelRedmi S2 (Redmi Y2)Mi Band 4-
PriceTK. 14,990Tk 2,400-

Network

Network TypeGSM / CDMA / HSPA / LTENo-
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 AMOLED On-cell capacitive touchscreen, 24bit colors depth-
Display Size5.99 inches, 92.6 cm2 (~74.5% screen-to-body ratio 0.95 inches, 2.41 cm-
Display Resolution720 x 1440 pixels, 18:9 ratio 120 x 240 pixels, (~194 ppi density)-
Display MultitouchYes - MIUI 9.5 120 x 240 pixels, (~194 ppi density)-
Display Density269 ppi density2.5D tempered glass, Anti-fingerprint coating Single touch button (wake up, go back)-

Camera

Primary CameraDual: 12 MP (f/2.2, 1.25μm, PDAF) + 5 MP, gyro-EIS, phase detection autofocus, LED FlashNo-
Secondary Camera16 MP, HDR, LED Flash--
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) 22.1g-
Body Weight170 g (6.00 oz)--
Body BuildFront glass, plastic body Plastic Polycarbonate-
Body ColorGray, Gold, Rose GoldBlack-

Launch

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

Platform

Operating SystemAndroid 8.1 (Oreo) Android 4.4 (KitKat)-
CPUOcta-core 2.0 GHz Cortex-A53--
GPUAdreno 506--
ChipsetQualcomm MSM8953 Snapdragon 625--

Memory

Memory Internal32 GB, 64 GB 16MB-
Memory ExternalmicroSD, up to 256 GB (dedicated slot)No-
Ram3 GB, 4 GB 512KB-

Battery

Battery TypeNon-removable Li-Po Battery Non-removable Li-Po-
Battery Capacity3080 mAh 135 mAh battery-

Multimedia

Fm RadioYesNo-

Sound

AudioVibration, MP3, WAV Ringtones Vibration, Ringtones-
LoudspeakerYes No-
3.5mm JackYes - Active noise cancellation with dedicated mic--

Connectivity

WiFiWi-Fi 802.11 b/g/n, WiFi Direct, Hotspot BT5.0 BLE-
Bluetooth4.2, A2DP, LE Yes, v5.0-
USBmicroUSB 2.0No-
GPSYes, with A-GPS, GLONASS, BDSNo-

Features

SensorsFingerprint-rear-mounted, accelerometer, gyro, proximity, compass 3-axis accelerometer + 3-axis gyroscope, PPG heart rate sensor, Capacitive proximity sensor-
MessagingSMS(threaded view), MMS, Email, Push Email, IMSMS-
BrowserHTML5 No-
JavaNoNo-

Other

Made ByChinaChina-
Other FeaturesMP4/H.265 player, MP3/WAV/eAAC+/FLAC player, Photo/video editor Document viewer 5V/2A 10W chargingIP65 Water Resistant, Water Resistance Rating5 ATM, Charging time up to 2 hours, Wrist strap material Thermoplastic polyurethane, Wristband width18mm, Adjustable wrist strap length. Controlling App Mi Fit System requirements Android 4.4, iOS 9.0 or above Voice Recognition, Alarm, proximity sensor, pre-set watch face, customizable watch face, lock scree-