You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Your Mobile Marketing Plan in Four Easy Steps Or, Four Questions to Ask and Answer Before Get You Started By David Berkowitz, Published on September 14, 2010 7 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.