The external speaker no longer worked.
Phone off. Pop the back cover starting at the charging port. It came off easy with my fingers. Take out the battery. Take out all the screws. The bottom assembly, external speaker, slides out. Discard the old part and slide in the part. Put the screws back in. Battery in. Cover on. Repair done.
Small phillilps screw driver found with eye glass repair kits was my tool. Since the screws are so small, taking the screws out on a tray would be helpful. Also, be patiet when putting the screws back in