× Want to know more about our cool digital marketing products? First Name First Name Last Name Email ! Opt-in To Future Emails Someone will connect with you soon Error - something went wrong! No thanks 4G World Event iOS App Intro Video May 18, 2015 Share this Video Facebook Twitter Email LinkedIn Promo video intro for UBM's 4G World event iOS app. This is a digital brochure in both native iOS app and web-based app formats.