Stuart happened to be nearby, and not that he was listening, he wasn't. But he heard. He tended to hone in on people talking about, ranting about, complaining about tech issues. it was just a thing his ears tended to pick up on.
He watched the guy for a second and decided to take pity on him. "I can help." He said. He didn't often approach people, he was far too shy for that. But the guy was having an obvious issue with his phone, and phones were Stuart's specialty.