Dropped iPhone 6 plus in soapy water

i was washing my sons bottles when I heard my phone fall into the sink full of soap. I ran and got it out as quickly as it fell in, it was probably only in the water for less than 10 seconds. I hurried and got a bag of rice together in less than 2 minutes and took my case off, powered off the device, and threw it in the rice bag. I then realized i didn't try to shake any water out about 10 minutes later so I went back to my phone and took it out of the rice, shook it (no water came out) and put it back in the bag.

what do I do from here to make sure the phone works in the future?? how long to keep in the rice bag and what additional steps should I take with the phone??

thanks all!