My iPhone 7 Plus won't respond to a hard reset. I'm not able to switch it on either. The phone detects the Home button being pressed only sometimes. I haven't backed up my data in a long time and really want it back, even if the phone dies out.
Here's how it died out:
My phone was out for a long time when the temperature was around 5-6 degree Celsius. It was dewy and there was some drizzle as well. When I was clicking a picture, the screen showed red and white vertical lines. It flickered once and the phone died out.
After about 4-5 hours, I checked it again. The screen showed a faint blue light but nothing else was working. When I put it to charge, the phone did vibrate. But even after charging it for 4-5 hours, it didn't work. After a few hours, the screen showed two white horizontal stripes and then it died down completely.
Now, there is no light on the screen. The phone doesn't vibrate when I put it for charging either.
What do you think the problem is? How should I retrieve my data?