How To Set Own Ringtone In iPhone?

Create or choose the audio file you want to use as a ringtone

Make sure the file is in a supported format like M4R

Use GarageBand on iPhone or iTunes/Finder on a computer to convert the audio into a ringtone

Import the ringtone file into your iPhone

Open Settings

Tap Sounds & Haptics

Tap Ringtone

Select your custom ringtone from the list

If needed, assign the ringtone to a specific contact in the Contacts app