× 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 Google+ 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.