To change your phone ringtone, you can follow these general steps:
1. Go to the settings on your phone.
2. Look for the "Sound" or "Sound & Vibration" option.
3. Find the "Ringtone" or "Phone Ringtone" setting.
4. Tap on the setting and choose from the list of pre-installed ringtones or select "Add" to choose a custom ringtone from your files.
5. Once you have selected the desired ringtone, save your changes.
The exact steps may vary depending on the make and model of your phone.
