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General

NameOppo R15 Dream Mirror EditionSamsung Galaxy M31-
ModelR15 Dream Mirror EditionGalaxy M31-
PriceTK. 51,990Tk 18,000-

Network

Network TypeGSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-
Network 3GHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1900 / 2100-
Network 4GLTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 17(700), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500)-
Network SpeedHSPA, LTE HSPA, LTE-A-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeAMOLED capacitive touchscreen, 16M Colors Super AMOLED capacitive touchscreen, 16M colors-
Display Size6.28 inches, 98.9 cm2 (~84.9% screen-to-body ratio 6.4 inches, 96.7 cm2-
Display Resolution1080 x 2280 pixels 1080 x 2340 pixels, 19.5:9 ratio (~411 ppi density)-
Display MultitouchYesYes-
Display Density401 ppi density--
Display Screen ProtectionCorning Gorilla Glass 5 - ColorOS 5.0--

Camera

Primary CameraDual: 16 MP (f/1.7, 1/2.6`, 1.22 µm, PDAF) + 20 MP (f/1.7, 1/2.8`, 1 µm), , phase detection autofocus, LED Flash64 MP, f/1.8, 26mm (wide), 1/1.72", 0.8µm, PDAF
8 MP, f/2.2, 12mm (ultrawide), 1/4.0", 1.12µm
5 MP, f/2.2, 25mm (macro), 1/5.0", 1.12µm
5 MP, f/2.2, (depth)
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Secondary Camera20 MP, f/2.0, 1080p32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaLED flash, panorama, HDR HDR-
Video[email protected][email protected], [email protected], gyro-EIS [email protected]-

Body

Body Dimensions155.3 x 75 x 7.5 mm (6.11 x 2.95 x 0.30 in)--
Body Weight155.3 x 75 x 7.5 mm (6.11 x 2.95 x 0.30 in)--
Body BuildFront glass, ceramic body Glass front, plastic back, plastic frame-
Body ColorCeramic Black, Dream Mirror Red Ocean Blue, Space Black-

Launch

Launch AnnouncementMarch, 2018February 25,2020-
Launch DateRelease April 1st, 2018Release March 5,2020-

Platform

Operating SystemAndroid 8.1 Oreo Android 10.0; One UI 2.0-
CPUOcta-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260) Octa-core (4x2.3 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53)-
GPUAdreno 512 Mali-G72 MP3-
ChipsetQualcomm SDM660 Snapdragon 660Exynos 9611 (10nm)-

Memory

Memory Internal128 GB 64/128 GB UFS 2.1-
Memory ExternalmicroSD, up to 256 GB (uses SIM 2 slot) microSDXC (dedicated slot)-
Ram6 GB 6 GB-

Battery

Battery TypeNon-removable Li-Po Battery Non-removable Li-Po-
Battery Capacity3400 mAh 6000 mAh-

Multimedia

Fm RadioNoYes-

Sound

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

Connectivity

WiFiWi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, Hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot-
Bluetooth5.0, A2DP, LE, EDR 5.0, A2DP, LE-
USBmicroUSB 2.0, USB On-The-Go 2.0, Type-C 1.0 reversible connector-
GPSYes, with A-GPS, GLONASS Yes, with A-GPS, GLONASS, BDS-

Features

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

Other

Made ByChinaKorea-
Other FeaturesFast battery charging: VOOC Flash Charge ,5V/4A MP4/H.264 player, MP3/WAV/eAAC+/FLAC player, Document viewer, Photo/video editor Fast battery charging 15W-