You can change or customize the alarm sound on your iPhone by following these steps:

  1. Open the Clock App:
    • Unlock your iPhone and find the “Clock” app on your home screen. It looks like a white clock on a black background.
  2. Go to the Alarms Tab:
    • Tap on the “Alarms” tab at the bottom of the screen to access your list of alarms.
  3. Edit an Existing Alarm or Create a New One:
    • If you want to change the alarm sound for an existing alarm, tap on the alarm you want to edit.
    • If you want to create a new alarm with a custom sound, tap the “+” button in the top-right corner to create a new alarm.
  4. Change the Sound:
    • In the alarm settings, find the “Sound” option. Tap on it.
  5. Choose a Sound:
    • You’ll see a list of pre-installed alarm sounds. Scroll through the list and tap on the sound you want to use.
  6. Preview the Sound:
    • You can tap the sound name to preview how it sounds.
  7. Custom Sounds:
    • If you want to use a custom sound from your music library, you can tap “Pick a song” or “Choose a song” (the wording might vary).
    • This will open your music library, and you can select a song to use as the alarm sound.
  8. Set the Alarm:
    • After selecting the sound, go back to the alarm settings.
  9. Adjust Other Settings:
    • You can adjust other settings for the alarm, such as the time, repeat options, snooze, and more.
  10. Save the Changes:
    • Once you’ve made all the desired changes, make sure to tap the “Save” or “Done” button to save the alarm settings.
  11. Enable the Alarm:
    • Ensure that the alarm switch is turned on. The switch will be green when the alarm is enabled.
  12. Close the App:
    • You can press the home button or swipe up from the bottom (depending on your iPhone model) to close the Clock app.

Now, your alarm will use the chosen sound to wake you up at the set time. You can repeat these steps for other alarms as well if you have multiple alarms with different sounds. Keep in mind that the ability to use custom songs as alarm sounds depends on your iOS version and device settings.