I dropped my phone in a sink filled with water a few years ago. The phone was in the water for a few seconds but I had a phone cover on it. I left my phone in a rice bag for a good week. It worked perfectly fine. I hope the luck extends to your DH's phone, too! I dropped mine in the ocean and it sunk - it took about 48 hours to get it back to normal! A minimum of 48 hours. I dropped my phone in the water for like 2 seconds. Shut it off and threw it in a bag of rice for 3 hours or so.