I just picked up the 15 Pro Max and have been running into quality issues with the front camera, see (this thread) from u/heavensomething
I spoke to a senior advisor tonight and this is a software issue causing some post-capture compression and processing that they’re aware of and working to create a fix for. There isn’t a real work-around for it at the moment, but the advisor seemed to think it wouldn’t be a crazy wait for a patch/software update that will address it.
She confirmed it’s a software issue and not a hardware issue, so there’s not much to do, but wait for an update.