IPhone 6s Plus, how do you mute a call while on call? (not how to mute ringer)?
I have a new iPhone 6s Plus and need to listen in on conference calls without other people on the call hearing me type in the background or the kids, so how do I Mute the sounds on my end so I can listen in without disturbing the others on the call? My current phone keypad on the iPhone 6s Plus only shows 1-9,0 *, and # buttons. 
You don't, just stay quiet.
- Why is the ringer sound on my iPhone not working? My ringer sounds are suddenly not working on my iPhone 4S. All of the other sounds are working fine, but the keyboard clicks, lock sound, and notification sounds are not working. I notice that when I try to turn up the volume of the ringer, I get a blank screen like the attached photo. Does anyone know how I can fix this? Thank you!
- Why can does the top speaker not mute on my iPhone 8+? You can barely hear it if you put your ear on it. If I watch a video with the volume all the way down I can still hear the video from that speaker.
- Keyboard clicks, lock sounds, ringer etc.not working but iPod is? (iPhone 4s)? I've had my iPhone for about 6 months and the buttons on the left hand side have stopped working, the keyboard clicks, lock sounds, ringer, alerts and app sounds don't work through the speaker but music will play through the speaker. All of my sound setting are turned on but still no sound? Vibrate works but sound would be pretty helpful.
- IPhone ringer toggle is broken, any other way to turn ringer on/off? The speakers very clearly work, and the phone's volume function, just the ringer on/off toggle and ringer volume buttons are non-op. Is there a way to turn my ringer on/off without the toggle and adjust the ringer volume without the buttons. I have an iPhone 4 and am running iOS 7. If there's an app that'll handle it you'll get your 10 pts. For sure.