I'm not able to turn off shutter sound in my Nokia3 while capturing photos
If you go to camera settings there an option to turn it off,scroll down the list its under the watermark option. Also you can use the keys or put phone on vibrate, Also note by law in some regions you must have shutter sound. There is apps also availble but we cant really discuss this hear as its not officially part of the software and invovles an external downlaod.
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