Setting custom ringtone on an iPhone

To set a custom ringtone on an iPhone, first we need to purchase it through the iTunes Store. The purchased ringtones will appear under Settings > Sounds & Haptics > Ringtone. I don't see those in the Tone Store listed anywhere. When moving to a new phone, sign in to the Apple account and tap Download All Purchased Tones to get the ringtones synced to the new device. There are manual ways to set…