iOS:
In-game payments are processed by the Apple store. Payment methods may vary for different countries. Typical methods include Credit card or debit card.
https://support.apple.com/en-us/HT202631
Android:
In-game payments are processed by the Google play store. Google supports various payment methods including Credit card and debit card, Google Wallet balance, Telecom billings, Google gift card… Click the link to view details:
https://support.google.com/googleplay/answer/2651410
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Game Guide for Mobile Legends – moonton