Car charger making iPhone not work again? What happened?

I would like to share my experience, and also ask what you think about it.

The other day I plugged in my iPhone 5S in the car charger. Neither the cable, nor the adapter were original Apple accessories.

The car hadn't been started at this point. Then I started the car, then I noticed that my phone hadn't started to charge, so I pushed the sleep/wake button, and I noticed that it wasn't on anymore, and from then on, I haven't been able to start the phone. I charged it for a whole night then with regular charger, but nothing happened, no button combination helped.

Can anyone explain it? I mean can it be explained technically why it got damadged? Is it because of the low quality accessories? What could be dabaged? Battery or motherboard/can it be repaired for a resonable price?

How do you save the memory of an iphone 5?

Around 48 hours ago, my sister woke up, picked up her phone, and then, because she wasn't really aware of what she was doing, dropped her phone in a cup of water, and then went back to sleep without even noticing. Probably about a half hour later, she officially woke up this time, and then took her phone out of the water. She tried keeping her phone in rice, but it still won't turn on, or charge. She did some research, and it costs a ton to get her phone fixed, so I think she's just giving up, and thinking about getting a new one. But she has all of her photos and games and apps on their. I was wondering if their was any way to save her phone and all the memory on it? I thank you for any information you can give.

Anyone downgrading from iPhone 7 plus to regular 7?

I just got an iPhone 7 plus and I find the phone a little too big to handle, plus the battery isn't as good as I expected and with a phone this big a battery case isn't an option. Has anyone downgraded and can tell me what they thought once they had?