My wife drop her iPhone into the kitchen sink and speaker stop to work after that
The entire repair took me around 2 hours. One hour for dissemble and one hour for putting it back together. I would say the cables and parts surrounding the speaker unit is kinda of tricky. It took me awhile to figure that part out. But the rest of repair went really smoothly thanks to the excellent guide iFixIt wrote.
The part is really tiny so be sure you don't drop it.
Make sure label all parts that you took off.