When your mobile phone rings you may not want anyone else to know about it. What you need is a silent ringtone, a way to make your smartphone ring quietly.
Download this silent ringtone as either an MP3 file or a WAV file if you want your cell phone to ring without a sound. With a silent ringtone your phone will ring but no one else can hear it.
Do you have an iPhone? Download the silent ringtone as .M4R files...
Configure your phone to vibrate when a call or text comes in as well as use the silent ringtone. You can feel it but no one else can hear it. A small way to hide in a crowd.