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General

NameOppo R15 Dream Mirror EditionVivo S1 Prime-
ModelR15 Dream Mirror EditionS1 Prime-
PriceTK. 51,990Tk 24,000-

Network

Network TypeGSM / CDMA / HSPA / LTEGSM / HSPA / LTE-
Network 2GGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMAGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2-
Network 3GHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 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)1, 2, 3, 4, 5, 7, 8, 20, 38, 40, 41-
Network SpeedHSPA, LTENetwork 4G-
Network GPRSYesYes-
Network EDGEYesYes-

Display

Display TypeAMOLED capacitive touchscreen, 16M ColorsAMOLED capacitive touchscreen, 16M colors-
Display Size6.28 inches, 98.9 cm2 (~84.9% screen-to-body ratio6.38 inches, 99.9 cm2 (~83.4% screen-to-body ratio)-
Display Resolution1080 x 2280 pixels1080 x 2340 pixels, 19.5:9 ratio (~404 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 Flash48MP, f/1.8, (wide), 1/2.0", 0.8µm, PDAF
8MP, f/2.2, (ultrawide), 1/4.0", 1.12µm
2MP, f/2.4, (macro)
2MP, f/2.4, (depth)
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Secondary Camera20 MP, f/2.0, 1080p16MP, f/2.0, (wide), 1/3.06" 1.0µm-
Camera FeaturesGeo-tagging, Touch focus, Face detection, HDR, panoramaLED flash, HDR, panorama HDR-
Video[email protected][email protected] [email protected]-

Body

Body Dimensions155.3 x 75 x 7.5 mm (6.11 x 2.95 x 0.30 in)159.3 x 75.2 x 8.7 mm (6.27 x 2.96 x 0.34 in)-
Body Weight155.3 x 75 x 7.5 mm (6.11 x 2.95 x 0.30 in)190.2 g (6.70 oz)-
Body BuildFront glass, ceramic bodyGlass front, plastic back, plastic frame-
Body ColorCeramic Black, Dream Mirror RedNebula Blue, Jade Black-

Launch

Launch AnnouncementMarch, 2018August 12, 2020-
Launch DateRelease April 1st, 2018August 12, 2020-

Platform

Operating SystemAndroid 8.1 OreoAndroid 9.0 (Pie), Funtouch 9.2-
CPUOcta-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260)Octa-core (4x2.0 GHz Kryo 260 Gold & 4x1.8 GHz Kryo 260 Silver)-
GPUAdreno 512Adreno 610-
ChipsetQualcomm SDM660 Snapdragon 660Qualcomm SDM665 Snapdragon 665 (11 nm)-

Memory

Memory Internal128 GB128GB UFS 2.0-
Memory ExternalmicroSD, up to 256 GB (uses SIM 2 slot)microSDXC (uses shared SIM slot)-
Ram6 GB 8GB-

Battery

Battery TypeNon-removable Li-Po BatteryNon-removable Li-Po-
Battery Capacity3400 mAh 4500 mAh-

Multimedia

Fm RadioNoYes-

Sound

AudioVibration, MP3, WAV RingtonesVibration, MP3, WAV 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, HotspotWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot-
Bluetooth5.0, A2DP, LE, EDR5.0, A2DP, LE-
USBmicroUSB 2.0, USB On-The-Go2.0, Type-C 1.0 reversible connector, USB On-The-Go-
GPSYes, with A-GPS, GLONASSYes, with A-GPS, GLONASS, GALILEO, BDS-

Features

SensorsFingerprint/rear-mounted, accelerometer, gyro, proximity, compassFingerprint under display, optical, accelerometer, gyro, proximity, compass-
MessagingSMS(threaded view), MMS, Email, Push EmailSMS(threaded view), MMS, Email, IM-
BrowserHTML5HTML5-
JavaNoNo-

Other

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