iPhone 11 selfie quality

Apple cannot fix anything having to do with Snapchat. Snapchat is a 3rd party and Apple doesn't own them, their app or any of the code. Other's have commented using the front facing camera with Snapchat produces less than desirable results. But that is something Snapchat and only Snapchat can resolve.

Let Snapchat know.

I've not experienced any issues with selfie quality on my iPhone 11, however I have read of others experiencing problems only with Snapchat. Have you checked with their support to see if there is an issue with their app working with the iPhone 11?

I’m a professional retoucher for video media with 13 years experience and I can tell you for a fact that the selfie camera in my iPhone 11 is color correcting the Gamma up in the midtones and shadows.

It’s a similar effect to color key techniques in Adobe Premiere called “beauty box.”

It’s probably adding some sort of “high pass” with “linear light” psd style blend mode so there’s some hint of original texture but it’s extremely hard to notice to the untrained eye.

Sorry to hear that you are experiencing a problem, but hopefully it has been identified now, and Snapchat will fix it.