Any way to tell for sure that an iPhone is flatlined to the point where you should put away the shock paddles and just prepare the eulogy? I dropped my iPhone 6S in the toilet the other day (karma smacking me in the face for always tsk-tsk-ing others who do such things as I never had before) and I immediately reached in, pulled it out, rinsed it off quickly with non-urinated water and sanitizer, and dried it off to the best of my abilities. Now, I know the general rule is to immediately toss it in a bowl full of rice with silica packets, but I was in a scenario where I was on the road and needed to use Waze to get where I was going. The phone seemed fine at first but then gradually started showing oddities such as the volume getting maxed or minimized without my interaction and the touch aspect of the screen not responding as it should. I had it plugged into power so as to keep it alive during my 3-hour drive and it became exceptionally hot and the battery continued to drain rapidly despite being plugged in and eventually came to the all black screen with Apple logo and flashed on and off of that screen intermittently until it finally went black altogether. After arriving at my destination, I quickly tossed the phone into a bag of rice with a couple silica packets and let it sit in there for a few days. Begrudgingly I had to get a new phone as I couldn't go without one for too long (7 Plus) and today I took the 6S out of the baggie, held the power button for a couple seconds, and was greeted with a low-battery signal. I plugged it in and went out for a while only to come back and find that it had not charged and it will not give me any signal at all now. Is it beyond the point of repair?