I have a S21 U phone that I just had the screen replaced. Damage was on the top left of the phone, about 0.75 inches down phone side. After screen replaced, the phone microphone is intermittent. Intermittent in this case is when someone is listening to me talk, they will hear me at a low volume, the it will spike to very loud, then back.
My guess is that there was a poor connection made when the new screen was laid down, but I don't know enough about the structure of the phone to know this for sure.
I should mention that they replaced the raster control due to the location of the damage and that the raster on the phone clearly was messed up. Perhaps this was where bad connection was made.
@jhmay If this worked properly before the repair then you should return to the repair center and have them diagnose the issue. They will need to correct the situation since they caused it.
A few things that could be happening: 1) they didn't plug the sub pba in properly causing it to freak out. 2) they could have cause slight damage to the sub board.
For screen repairs, the screen doesn't actually get replaced, in a sense. The glass comes attached to a new body w/ a battery and the internals are moved over from old to new. So it would have to be something that happened when moving the components as mentioned above.
Best option is to take it back and have it sorted out again.
Where did you have it replaced? If it's a Ubreakifix location, they warranty that work and will fix it for you.
You both gave me what I needed to know, that being that replacing the screen could have caused this, and the fact that they had to transfer compenents from old to new screen makes it even more obvious that they just didn't make a good connection or the screen contacts where bad.
I will likely not let you know how this works out, but if I remember, I will.
