Super apps

The wireless service plans join a variety of banking and payment products offered by OnePay, a fintech company backed by the big-box retailer Walmart.

Super apps such as AliPay and WeChat Pay have carved out immense market share by enticing users as a one-stop shop for their payment, shopping and social needs in a model that many U.S.-based companies have tried to replicate. But what makes a super app successful, and how easy are they to launch?