Aporte original por: Minus ,
Continuously press the unstuck volume button with the phone powered off, it may help it click back out again. As for the no signal error be prepared for the phone to be damaged, electronics do not like water. But it could also be that your sim is faulty, but that is only if you are lucky. You may need to open the phone and clean the board down with some cleaning alcohol, the water may have dried around the pins that the antenna connect to on the main board which controls the signal. It is worth a try, can't get any worse right? :D Anyway for future use if you drop your phone in water, strip it down to the main board and get to rubbing with the alcohol, the water will attach to it and evaporate quicker, leave it to dry at room temp for at least 24hrs then reassemble making sure the rest of the casing is clean and dry.