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Mobile Minutes: Snapchat geofilters; Samsung Pay in Brazil; Vevo?s new app; Sainsbury trials one-hour delivery

Snapchat Inc. may start to see more brands paying up for location-based advertising campaigns on its photo-sharing mobile app, thanks to the efforts of another startup, Yext Inc.

Samsung Electronics Co. is introducing its mobile-payments app in Brazil, a bet that the Olympics Games in Rio de Janeiro can be a springboard to more markets in Latin America where phones have become a key gateway to the web.

About 400 million people each month watch music videos presented by Vevo LLC, the digital-ad-sales platform founded seven years ago by the world?s two biggest record companies.

Sainsbury's, Britain's second largest supermarket group, is trialing a one hour home delivery service that is similar in concept to Amazon's 'Prime Now', it said on Friday.