Dialing 411 is easier than finding a phone book, but the cost of the calls can add up. The next time you need a number (or stock quotes or driving directions, among other information), send a brief query to 46645 (it spells GOOGL) from your cell phone. Provide a film title and a ZIP code, for example, and Google’s Short Message Service (SMS) will reply with a list of theaters and screening times. There’s no charge (besides your provider’s fee for text messaging). For more details and an online demo, visit www.google.com/sms.