SHENZHEN, China — Finding reliable Wi-Fi in Shenzhen has been tricky for Patrick McCaw. Typically, that would be a relatively trivial concern. But in the wake of one of the deadliest mass shootings in American history Sunday night in Las Vegas, a city McCaw calls his "second home," the need for a good signal has been paramount. "My phone hasn't been working," McCaw, the Warriors' second-year shooting guard, said before an optional workout Tuesday afternoon at Shenzhen City Arena. "It's working, then it's not. When I'm on a Wi-Fi that works, I was trying to reach out to everybody and make sure that their family and friends were OK.