What Can Someone Do with a Phone IP Address? Risks & Precautions? or What Can Someone Do with a Phone

Meh, IP addresses aren’t *that* big a deal unless you’re dealing with a determined hacker. Most "attacks" are just script kiddies trying their luck.

But if you’re paranoid (like me), use Tor or a VPN. Also, disable Wi-Fi when you’re not using it. Simple stuff.