How do I reinstall Apple Pay on my iPhone?

To reinstall Apple Pay on your iPhone, you need to reinstall the Wallet app from the App Store, search for "Apple Wallet", and tap the eye icon to reinstall it. 

Here's a more detailed breakdown:

• Find the Wallet App:
• If you've accidentally removed the Wallet app, go to the App Store and search for "Apple Wallet". 
• Reinstall the App:
• Once you find the Apple Wallet app, tap the eye icon to reinstall it. 
• Add Cards:
• After reinstalling, open the Wallet app and follow the on-screen instructions to add your credit or debit cards. 
• Set up Apple Pay:
• Once you've added your cards, you can set up Apple Pay by following the instructions in the Wallet app. 

Hello~ Any help below?

Set up Apple Pay - Apple Support

If not more explanation may be needed.

~Katana-San~

What specifically needs reinstalling? Are you confusing Apple Pay with Apple Cash?