iPhone water-damaged, DFU works but it won't turn on?
I dropped my iPhone 5s in a toilet a year ago while on vacation in Ireland. It was submerged for a couple of seconds and when I got it out, it acted strangely for a few seconds and then just shut off. I bought some rice as soon as I could and there it sat for days. Once back in the States, I took it to a repair shop who told me they couldn't get it to turn on. This is what they told me:
"After cleaning the phone, we actually tried a new battery, charge port and screen. None of those combinations would get your phone to turn back on. What that means is it is likely a motherboard short which we can not repair."
All I want off of it are the photos from my trip prior to the toilet incident. I also reached out more recently to a forensic repair team who told me they'd only have a chance at fixing it if there is power to the motherboard but that it doesn't sound like there is based on what the above says.
However, when I try various repair programs, I've plugged it in, held the home + power buttons, then let go and held just the home button to get into DFU mode and it seems to work, as I hear an alarm via the PC. There is a second alarm when I hold it again, to exit DFU mode.
My real question is: could the DFU thing be a sign there IS still power to the motherboard, or is it unrelated? I'm just wondering if there's any hope for this phone or if it's truly unfixable.
Is this a good question?