1. Install PP Apple Assistant on the computer. After the installation is complete, connect the iPhone to the computer;

2. If there is no ringtone file, you can use the personalized section in PP Apple Assistant - Cool Sound Ringtones Download your favorite ringtones and keep your iPhone connected to the computer to complete downloading and importing the ringtones.

3. After the import is completed, open your phone, go to Settings - Sound - Phone Ringtone to find the ringtone you just imported, and click to select it.