Welcome to Malaysia's Largest Mall, ranked Top 10 Largest in the World, with over 700 retail stores to shop-eat-play! 1 Utama s Mobile App is a digital companion for every savvy shopper. Designed to heighten your shopping experience, this nifty app is packed with cool features. WHAT'S NEW: 1PAY, Malaysia's 1st retail E-wallet and ONECARD digital wallet.