All in-game purchases in Star Trek Fleet Command on Android are processed through Google Play. Below are the steps to add, edit, or remove a payment method, as well as information about accepted forms of payment.
 

Add a Payment Method

  1. Open the Google Play Store app

  2. Tap Menu, then go to Account and select Add payment method

  3. Follow the onscreen instructions

  4. The new payment method will be saved to your Google account

For more details about available options, check out tthis Help Center article

Edit a Payment Method

  1. Open the game and go to the Offers tab

  2. Select the package you want to purchase

  3. Tap the card shown or choose Payment methods

  4. Choose an existing method or add a new one

  5. Complete your purchase

Note: If you add a payment method while making a purchase, it will be saved to your Google account.

 Remove a Payment Method

  1. Open the Google Play Store app

  2. Tap Menu, then select Payment methods

  3. Choose the payment method you want to remove

  4. Tap the More button in the top right corner and select Remove payment method

  5. It will be removed from your Google account

Accepted Payment Methods on Android

Google Play offers several payment options, which may vary by country:

  • Credit and debit cards: Visa, MasterCard, American Express, and others depending on your region

  • Carrier billing: Available in supported countries with compatible carriers

  • Google Play gift cards: Available in selected regions

  • Google Wallet balance: Available only in the United States and United Kingdom

If it is your first time making a purchase, the payment method will be saved to your Google account automatically.