If you have an iPhone, downloaded iOS 8.4, and signed up for the new Apple Music free 3-month trial, here is something you should do:
1. Go to the top left corner and click that button.
2. Click “View Apple ID.”
3. Under Subscriptions, click “Manage.”
4. Click “Apple Music Membership.”
5. Uncheck “Auto Renew.”
You have now saved yourself hundreds of dollars in frustration that you might not have realized until far beyond your 3-month free trial is over.