* iTunes Store. The iTunes Store offers a variety of Demi Lovato ringtones, which can be purchased and downloaded directly to your iPhone. To find Demi Lovato ringtones on the iTunes Store, simply open the iTunes Store app on your iPhone and search for "Demi Lovato."
* Google Play Store. The Google Play Store also offers a variety of Demi Lovato ringtones, which can be purchased and downloaded directly to your Android device. To find Demi Lovato ringtones on the Google Play Store, simply open the Google Play Store app on your Android device and search for "Demi Lovato."
* Third-party websites. There are also a number of third-party websites that offer free Demi Lovato ringtones. However, it's important to be careful when downloading ringtones from third-party websites, as they may contain malware or other harmful software.
To set a Demi Lovato ringtone on your iPhone or Android device, follow these steps:
1. Download the Demi Lovato ringtone to your device.
2. Open the Settings app on your device.
3. Tap on "Sounds & Haptics" (iPhone) or "Sound" (Android).
4. Tap on "Ringtones" (iPhone) or "Phone ringtone" (Android).
5. Select the Demi Lovato ringtone you want to use.
Demi Lovato ringtones are available for download on the app store or other music service.