Water damage : no Sim password asked anymore

So you had a PUK code on your SIM? If that's the case try a different SIM and see if you can call out. Does your phone show signal strength? No service? Searching? More information would be helpful.

Recover your iPhone pass code

The phone might not be completely dried out.

1. Turn the phone off.
2. Wrap the phone in some light cloth, such as a nylon stocking.
3. Place place in a ziplock bag full of uncooked rice for a couple days.

The rice will pull trace moisture out of the phone innards. The stocking helps keep rice, and rice dust, out of the phone.