Alipay is the most popular e-Wallet service in Asia. In China, millions of transactions are processed using Alipay each day! Residents use Alipay's digital wallet on their smartphone to quickly and conveniently make payments in-store, online, and by money transfer. The Alipay e-wallet app allows users to save their debit or credit card details to the app and then use their mobile phone to make payments, instead of cash or a bank card.