PayPal can be used in numerous ways to send or receive money.
You can't add a PayPal account to your Apple Pay account, however. This means you can't use PayPal on your iPhone or Apple Watch to make contactless Apple Pay payments.
This doesn't mean that you can't use PayPal on your phone at all, though; you can add your PayPal account to your Apple ID. This will let you buy apps and music using your PayPal account on Apple apps.
Here's how to connect your PayPal account to your Apple ID.
1. Unlock your iPhone and head to "Settings."
2. Tap your name, which is located on top of the "Settings" page.
3. Click on "iTunes & App Store."
4. On the next screen, tap "Apple ID" then select "View Apple ID" and login to your Apple ID account.
5. Once you are logged into your Apple ID, click on "Manage Payments."
6. Click on "Add Payment Method," then tap on "PayPal" on the next screen.
7. Log into your PayPal account and confirm that you're adding PayPal onto your Apple ID account.
Now, when you purchase apps or music within Apple apps, your iPhone should default to using your PayPal account.