IPhone 6+ & the lake, will this cause long term problems?

[Resqu2]

So yesterday while trying to climb on my pontoon my iPhone in an Otterbox Defender caught the side and instantly sunk, I grabbed it and dried it off immediately and everything worked but when making calls I couldn't hear the other person at all. About an hour later it fixed itself and all has been fine today but I'm concerned about long term effects as I need to keep this phone another 18 or so months. So what do y'all think?

 

[Luis G.]

So yesterday while trying to climb on my pontoon my iPhone in an Otterbox Defender caught the side and instantly sunk, I grabbed it and dried it off immediately and everything worked but when making calls I couldn't hear the other person at all. About an hour later it fixed itself and all has been fine today but I'm concerned about long term effects as I need to keep this phone another 18 or so months. So what do y'all think?

I've dealt with quite a few water damaged cellphones when fixing them.
To be honest it's like 50/50 chance if you are still using them.

To minimize the risk, stop using the phone immediately afterwards. Turn it off, and put it in a bowl or bag of rice.
As long as I do the rice trick, no phone that's went into water has died on me yet.
That's a Note 3, Samsung S4, and a iphone 4s.