How To Turn Off Keyboard Sound On Your iPhone.
For shutting off tone, iPhones have a physical switch. This switch mutes incoming audio alerts and only when a call, a text, or any other type of alert is received is the phone vibrating. Though you set the switch to mute, but when you play a video you'll still hear sound.
You'll also hear a shutter sound when you take a picture, you'll hear a click sound when you lock your phone and you'll also hear typing sounds when you press keys on a virtual keyboard.
The video playback is something you have control over, i.e. you can change the media volume. The camera shutter can't be silenced, but you can turn off typing sounds on iOS, but not from the sound switch.
Type and screen lock click sound are not actually linked to the mute/unmute switch on an iPhone. They have their own setting specially.
1. On you iphone (or iPad, this works for both) Open the Settings, and head to Sounds/sounds & Hapitics.
2. Scroll to the end till you will see two switches; one for typing sounds, and one for lock sound. Turn them both off.
Now, If you press a key and lock the phone or tablet, you'll no longer hear the sound or audio interface.
If you wonder what the camera shutter sound can do, the answer is nothing. You can find a tweak that can silence the camera shutter when you're ready to jailbreak your phone. Instead, you can try taking pictures using a different application and see if 8 of the shutter sound can be taken.
The shutter sound used to be quiet, but allowed users to take pictures in circumstances that compromise or violate the privacy of someone; think upskirt photos..
The shutter warns people around you that a picture has been taken to prevent people from "snipping" images. It may be disturbing, but it's the greater good, as they say.
In older iPhones, the shutter sound in the camera application might still be silent. But we're talking about exceptionally old versions, which probably don't run the new iOS version and which will certainly be obsolete in years if they haven't.
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Source: Addictivetips