Google's answer to the Apple Pay mobile-payment service is debuting in the US, marking a do-over by the company behind the world's most-used operating system for smartphones.
Android Pay will be similar to Apple Pay, except it works on Android phones rather than Apple's iPhones. On some Samsung Android phones, it will sit alongside Samsung Pay.
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All three services let people buy goods at retail stores by tapping their phones against the store's payment terminal. The user's debit or credit card on file then gets charged.
Google Wallet, the company's first attempt in mobile payments, flopped because it didn't have a big enough network of compatible devices and wireless carriers willing to work with it.