Yes, Oppo R17 Pro does have the face-unlock function. The phone also has an in-display fingerprint scanner.
No. Oppo R17 Pro does not have the LED flash at the front camera. Its display works as a flash in low-light conditions.
No. Oppo R17 Pro does not support wireless charging.
Oppo R17 Pro has Qualcomm Adreno 616 GPU.
Yes, Oppo R17 Pro has a dedicated 3D camera at the rear.
Oppo R17 Pro has a lot of points going in its favour like excellent set of cameras, great display and design as well as top-notch performance. I think Oppo R17 Pro can give solid competition to OnePlus 6T going by the overall performance.