See all those pretty colors? None of it belongs there. That's called rust and corrosion.
Q: How is tossing your wet phone in rice supposed to help this?
A: It can't.
If you still think rice "saved your phone", here's a bit of knowledge: the rice had nothing to do with it and your phone wasn't as wet as you thought it was. Water damage is always tricky because it's impossible to know how much water got into the phone and where in the phone it went. But, if you want to gamble with your $300-$1,000 cell phone and your 10,000 photos you never backed up, go for it. That's exactly what you're doing when you stick your wet phone into rice.