Oppo R15x comes with Android v8.1 (Oreo) OS, 6.3 inches OLED capacitive touchscreen, 16M colors and 1080 x 2280 Pixels resolution + 401 PPI pixel density, It has Nebula and Ice Silver colors, Dual SIM Slot supports 2G, 3G and 4G LTE network.
The smartphone has Dual 16MP + 2MP rear camera having geo-tagging, touch focus, face detection features and 25MP front camera for selfie experience.
Oppo R15x has Octa-core processor, Qualcomm Snapdragon 660 chipset and Adreno 512 GPU.
It has 6GB and 128GB internal Storage and up to 256GB micro SD card slot. It brings Bluetooth 5.0, A2DP + Micro USB 2.0 and 3.5 mm Audio jack.
Here is Li-lon 3500 mAh Non-removable battery but no Fast charging and wireless charger support.
The smartphone has Fingerprint (Under-Display), accelerometer, gyro, proximity and compass sensors.