There are several situations where one might need a silent ringtone for the iPhone — use of the Google Voice service, a friend or family member who always seems to call at the most inopportune time and so on.
Unfortunately, there is no such ringtone included on the iPhone, so we’ve created a very small file (12kb) you can download and use – free.
Just download and the ringtone file below(SilentRing.m4r) to your computer, connect your iPhone via iTunes and drag-and-drop the file to the iPhone section on the left-hand side of the iTunes window. The silent ringtone will then be an available option for specific contacts or as the default ringtone from the Settings > Sounds menu.
Download Silent Ringtone (right-click to download)