Chosen Solution
So, battery replacement went smooth, until I tried my camera. Picture works, but when I take a video my sound muffles in and out. I took my screen off again to see if I possible just reattached it wrong, a little loose or something, but that’s not it. Anyone else have this problem? When I take a video on Snapchat or IG it works, but not on camera app or YouTube.
Are you referring to front camera for the muffled sound? You may have incorrectly installed the FACM Flex that includes the front microphone. This would cause muffled sound and also cause other sound issues as sometimes that microphone is used for noise cancellation. Take a look at this guide to see if everything is installed properly.
