Chosen Solution

I recently replaced my 6s plus screen and have replaced quite a few screens over the years, But I’ve got a problem, there is no sound from the phone, I can make and receive calls fine through the ear speaker but there is no loud speaker, ringtone, message tone etc, also when I flick the toggle switch down it doesn’t vibrate, the front and back cameras all work fine.

Well that’s weird. I don’t see why it would go bad from doing the usual screen replacement. I’d start off by ruling out software first. Restore your iPhone via iTunes (Make sure to do a iTunes backup of the phone if you need to keep any user data off it) then restore from a iTunes backup and test the loudspeaker / ringer. I recommend trying without restoring the backup then trying after (Sometimes the phone settings stored in backup can do weird things with sound / mic not working).

Wow, this has happened to me. Now, I have to go back to deal with it.