How to put your favorite ringtone in Nubian z7mini built-in ringtone? There are alarms and messages. . . . . ?

Hello! First, please enter the menu-Settings-About Mobile Phone-click the version number for about 7 times, then return to exit the menu interface-Others-Developer Options-slide USB Debugging to open, so that you can connect the mobile phone and the computer with USB data cable, then drop down the notification bar on the mobile phone, click USB connected, and then click USB mass storage to connect the mobile phone and the computer. Then open "My Computer" on the computer-find the "removable disk", which is the built-in storage of the mobile phone, and then copy the music you need, such as MP3, to the ringtone folder in the root directory of the mobile phone, copy the information ringtone to the notification, or create a new folder to copy. Then, when setting ringtones, messages and alarm clocks, you can choose settings from built-in media or local music, and alarm clocks can also choose settings from local music.

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