Beside this, why does my face look crooked in selfies?
Paskhover and colleagues explain in JAMA Facial Plastic Surgery that the distortion happens in selfies because the face is such a short distance from the camera lens. In a recent study, they calculated distortion of facial features at different camera distances and angles.
Similarly, are mirrors or selfies more accurate? Most people think photographs of themselves don't look “right” - but that is because most of us have grown up looking at ourselves predominantly in the bathroom mirror. while other offer the option to mirror the image or not. So, yes - in a sense, a selfie image is a more accurate image than a mirror.
Accordingly, why does the Iphone camera make my face look crooked?
The right side of your face remains on the right side in the mirror. It actually flips forwards and backwards. The reason it looks different from photos/ perspective of others, is because their perspective has left/right flipped around.
Is the Iphone front camera accurate?
Your phone camera is just as accurate as a mirror, the difference is that in the mirror, your image is flipped. Your camera is perfectly fine, the problem is that you aren't used to the regular image, of you flip the image you may find that you like that more since it's what you see more and what you prefer.