I know this is a bit old but there is a nice channel on youtube. Ipadrehab
ps. It is really amazing how bad water affects these phones. Here’s the real issue. Unless a phone uses this special stuff that coats all the electronics making it “water resistant” it could be catastrophic.
The devices use chips that have whats called ball grid array on the bottom. tiny balls that connect to the board with very small spacing between. The problem is the water causes corrosion and contact between these contacts. I have revived a samsung phone that sat in 6 inches of water over night using the ez bake method, and it still works fine to this day. But that samsung was the sport model, with gasket on the back and the coating stuff.
I’ve also used the rice and bake method on an old ipod (silver), and it still works. The lcd is a bit disfigured but it works.
Watch some of the water damage videos on that channel. It’s crazy how bad it can get quickly.
And data recovery? Forget it on the iphone. Soon as you lock it, the flash memory is encrypted.