Guy with cell phone in the city trying to figure out all the exotic buttons on his new phone. Scrolls through a couple of screens and decides to press a pink button.
In the stratosphere, a satellite dish is opening and arming a nuclear weapon.
The guy, unaware he has just started a nuclear war repeatedly asks into the phone:
Grandma? Can you hear me? Grandma?! Happy Birthday! Slogan: When simple is better.