Ringtone Duoduo is a software that provides various types of mobile phone ringtones for everyone, and also allows users to add friends. Many friends don’t know much about this, so next you can follow the editor’s source code website Study it.
Open Ringtone Duoduo and click User Options in the upper right corner of the page.
Then select your friend's avatar and click Open.
Then go to the other person's homepage and click "Follow" to add friends.
Do the answers that the editor brings to you solve your problems? If you feel it is helpful to you, please pay more attention to the source code Internet cafe .