Re: iPhone 5 water damage
Unfortunately the iPhone can seem to be working perfectly sometimes for weeks after something like this (or near perfect with bugs like you're experiencing), and then one day it'll just go completely dead...or some major part (like the screen) will crap out. It's always better if you have the means to, to replace the phone after it has been submerged in any kind of liquid because there just isn't a guarantee it will continue working for any amount of time.
That said...if you don't have a replacement available to you some how...the rice bag technique has worked for me personally and a few people i know very well. I had a 4 that i dropped in the toilet, the poor thing took the plunge and just stopped working all together. 24 hours in a rice bag and it started working perfectly again...no issues that i remember. This isn't always a sure bet, but if you're looking at no real option, this is certainly worth the time...the main success piece to this though is getting the phone completely shut down quickly and in the rice quickly...after the water has touched the boards that are active, that is when all hell breaks loose.