How to add pay cards in Google?

Google Pay is a digital payment platform developed by Google that allows you to make secure payments online, in stores, and between individuals. It works on Android devices, iPhones (for limited features), and the web. The key features of Google Pay are contactless payments, online & in-app payments, peer-to-peer transfers, bill payments, and loyalty cards & rewards.
To add pay cards in Google, please refer to the following methods:
Method 1:
1. Open [Settings];
2. Go to [Google];
3. Select [All services];
4. Tap [Google Pay];
5. Tap [Not now];
6. Tap [Add a card].
Method 2:
1. Open [Settings];
2. Go to [Google];
3. Select [All services];
4. Tap [Google Pay];
5. Tap [Install Wallet];
6. Open the app, then tap [Add a card].
Method 3:
1. Install the Wallet APP from the Google Play Store (Android) or App Store (iPhone);
2. Open the app and sign in with your Google account;
3. Tap [Add payment card].