One can change the ringer of an iPhone by going to the settings -> sounds -> ringtones and select the ringtone of choice, one can also change the tone for alerts as well.
It is simply Apple's default ringtone unless you change the default in Settings.
Go to settings, then, then sounds, then ringtone. Assign to a contact.
buy them from itunes
No, iPhone ringtone file is .m4r extension
To find free Virgin mobile ringtones for the iPhone 4 you can download a ring tone app for free such as Ringtone Maker, Ringtone Designer or Myxer Ringtones. You could also try Ringtone DJ or RingtonesX.
Incase Bird's Nest Snap Case iPhone 4/4S
you get a ringtone making app and follow its instructions
No, because iPhone ringtone is in .m4r format, which is not supported by other phones
I usually use Blaze Video Magic to make custom ringtones, and it offers users the best, fastest and easiest to create custom ringtones for your iPhone. You can create as many ringtones from music files or video files as you like and never pay for a ringtone again. The Sync feature enables you to move your created ringtone to iPhone directly, so there is no need to "jailbreak" your iPhone. It is very simple. Even if you are using this software for the first time, you can create your ringtone in seconds.
One can download the Crank ringtone for the iPhone online and then transfer it to his or her iPhone or one can download it directly from the store on the iOS device.
I'm using Daniusoft iPhone Ringtone for Mac to help me convert MP3 to iPhone ringtone, it's an easy-to-use program for me, you can get more information and download the program here:http://www.daniusoft.com/iPhone-ringtone-maker-for-mac.HTML. hope it can help you!