Select an option from Settings > Sounds & Haptics > Ringtone to set a new default ringtone. You can use a third-party app to create a custom ringtone. Select it as the default in the Ringtone settings ...
Many iOS users don't bother to change the default ringtone on their devices. After all, the default tone has been the same ...
OS 26 is here with over 200 updates. Beyond major changes, it hides useful features that can simplify messaging, photos, reminders, and daily iPhone use.