Oppo R15 has Android 8.1 (Oreo), It offers an internal memory of 128 GB with 4&6 GB RAM, It presents a screen of Full HD+ resolution, And it comes with a battery capacity of 3450 mAh .
Oppo R15 specifications
General
6423 Announce date : March, 2018
6423 Release date : April, 2018
6423 Height × Width : 155.1 mm x 75.2 mm (6.11 x 2.96 in)
6423 Thickness : 7.4 mm (0.29 in)
6423 Weight : 175 g (6.17 oz)
6423 SIM : Hybrid Dual SIM (Nano-SIM, dual stand-by)
6423 Colors : Hot Red, Snow White, Star Purple, Fantasy Pink
6423 Build : Front glass, aluminum body
Oppo R15
Display
6423 Display type : AMOLED capacitive touchscreen, 16M colors
6423 Screen size : 6.28 inches (~84.8% screen-to-body ratio)
6423 Resolution : 1080 x 2280 pixels [ Full HD+ resolution ]
6423 Pixel density : (~401 ppi pixel density)
6423 Multitouch feature : yes
6423 ColorOS 5.0 : yes
6423 Protection : Corning Gorilla Glass 5
Camera & Video
6423 Rear camera : Dual : 16 MP, f/1.7, 1/2.6″, 1.22µm, PDAF + 5 MP, f/2.2,
6423 Rear camera : depth sensor
6423 Camera features : LED flash, HDR, panorama
6423 Video : 2160p@30fps, 1080p@30fps [ 4K UHD video ]
6423 Front camera : 20 MP, f/2.0, 1080p@30fps
Memory
6423 Expandable memory : Card slot microSD, up to 256 GB (uses SIM 2 slot)
6423 Internal Memory : 128 GB
6423 RAM : 4&6 GB RAM
Battery
6423 Battery type : Non-removable Li-Po
6423 Battery capacity : 3450 mAh
Platform
6423 Operating System : Android 8.1 (Oreo)
6423 Chipset : Mediatek MT6771 Helio P60 (12 nm)
6423 Processor : Octa-core (4×2.0 GHz Cortex-A73 & 4×2.0 GHz Cortex-A53)
6423 Graphics : Mali-G72 MP3
Network
6423 2G bands : GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2 & CDMA800 &
6423 2G bands : TD-SCDMA
6423 3G bands : HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
6423 4G bands : LTE
6423 Speed : HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat13 600/100 Mbps
6423 GPRS : yes
6423 EDGE : yes
Sound
6423 Alert types : Vibration, MP3, WAV ringtones
6423 Loudspeaker : yes
6423 3.5 mm jack : yes
6423 Active noise cancellation with dedicated mic : yes
CONNECTIVITY
6423 WLAN : Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot
6423 Bluetooth : 4.2, A2DP, LE, EDR
6423 GPS : yes, with A-GPS, GLONASS
6423 USB : MicroUSB 2.0, USB On-The-Go
Features
6423 Sensors : Fingerprint (rear-mounted), Accelerometer, Compass, Proximity,
6423 Sensors : Gyro, Ambient light sensor
6423 Messaging : SMS (threaded view), MMS, Email, Push Mail, IM
6423 Browser HTML5 : yes
6423 MP3/WAV/eAAC+/FLAC player : yes
6423 MP4/H.264 player : yes
6423 Document viewer : yes
6423 Photo/video editor : yes
6423 Fast battery charging : yes (VOOC Flash Charge 5V/4A)
Oppo R15 disadvantages
6423 Radio : No
6423 Removable battery : No
6423 Water & Dust resistant : No