Connect your Android device to your tablet / computer with a USB cable
After the window opens, select the ringtone file that you want to use to transfer the computer to your Android phone.
After the window opens, choose the ringtone file you want to use and transfer it from your computer to your Android phone.
On your device, tap Settings> Sounds & Notifications> Ringtone
Select the song you just transferred and set it as your ringtone.