pmilkes, the same with me. Everything ok except the loudspeaker. I just did the same thing wrong as you did. (I did not notice the 1,2mm 1,3mm and 1,7mm screws.
A good solution is appreciated.
By the way, my phone (iphone 5s) went complete in drinking water for three hours while I was asleep. And after 2 months I decided to change the battery. So now everything is working except the loudspeaker. (I already ordered for a replacement of that also)
thanks I fixit.