You can modify your payment method in your account settings.

📌For the App Store:
1. Open Settings → iTunes & App Store.
2. Tap your Apple ID email and select View Apple ID. You may be asked to log in to your account.
3. Select Manage Payments. If your device uses the Family Sharing function, your payment information can only be changed by the sharing organizer.
4. Modify or remove the information. Tap Remove to delete a payment method.
5. Tap Done.

❗IMPORTANT NOTE: Once you've changed your payment method, you may see a temporary authorization hold for a small amount on your payment card (iTunes does that to make sure your new payment account is active).

📌For Google Play:
1. Open the Play Store app.
2. Tap the menu icon → Account, then head to Payment methods.
3. Choose More payment settings. Log in your Google Payments account if necessary.
4. Tap Edit under the payment method you want to modify.
5. Apply the changes and tap Update.

📌For the Amazon Appstore:
1. Open Manage Your Content and Devices.
2. Select Settings → Edit Payment Method.
3. Enter your changes and tap Continue.

📌For Huawei AppGallery:
1. Open Settings.
2. Go to Account center → Payments and purchases.
3. Select the preferred bank card or phone number and edit or remove the information. Tap Remove to delete a payment method. You may have to enter your payment password.

📌For Galaxy Store:
1. Open Galaxy Store.
2. Tap the Menu icon on the left and tap Payment methods:

- To add a payment method, tap Add a credit or debit card and follow the instructions.
- To delete a payment method, tap the "—" icon, then tap ОК to confirm.
- To edit a payment method, delete your current payment method and add it again.

📌For Microsoft Store:
1. Sign in to the Payment options page with your Microsoft account. If you can't sign in, try troubleshooting issues with your Microsoft account.
2. Find the payment method you want to update, and then select View or Edit card.
3. Enter your updated info and click onSave.