Mobile shopping and purchasing have become the norm across the globe, according to “Mobile Commerce: A Global Perspective,” an in-depth survey of mobile users from 19 countries around the world, released at the IAB MIXX Conference. Three-quarters (75%) of smartphone and tablet users said they have purchased a product or service on their smartphone or tablet in the past six months. Among these recent mobile purchasers, nearly a quarter (23%) buy on mobile devices on a weekly basis. Mobile purchasers in Turkey and China report the greatest percentage of their total monthly purchases on smartphones or tablets (44% and 42%, respectively). Those in the U.K., Singapore, and Australia say they make a third or more of purchases on mobile screens.