Change the battery then test it. If not try with a new display. If not then I don’t know, it will probably be a motherboard fault. I doubt it though, it’s most likely just a simple battery issue.
It doesn’t matter anymore, this issue has been fixed as Apple got sued for this. I personally would do this repair after though just to be sure. I strongly recommend doing it after.
I am quite confused by what on Earth you are saying, but if you have broken the screen, follow this guide to replace the screen. iPhone7 LCD屏幕面板组件的更换 I do not recommend the iFixit screens on here, they are good quality but are extremely overpriced. I strongly suggest going on eBay and ordering an iPhone 7 screen that is under £20 but also has very positive feedback or very positive reviews. If you have not got experience with repairing screens, take it to a shop. Hope this helps!
If you are confident it is not any of the settings’ problems, then take it to a shop for them to properly diagnose the problems. If you are capable of repairing yourself, What I would do is replace the key. Hope this helps!
Try a new power supply. If not then tear it down and troubleshoot it properly. If you are in the UK here is one: https://www.ebay.co.uk/itm/112267441761 if not then find one in your country. If this helps please mark my answer is helpful and if it is the solution please press resolve answer. :)
Do a force shutdown: Hold power button to force tablet to shut off. After device shuts off, wait an hour. Then, try again later. This should help. If it does, please choose my answer as a solution it would be hugely appreciated :) :
I think you might be able to make it fit after little to no tampering, but you will run into issues such as the iPhone X components not connecting to the iPhone XS logic board. For example, the iPhone X screen will not connect to the iPhone XS logic board. You will need to get an iPhone XS screen too. Not sure about the other components.
I have searched many many websites and can’t find any digitzers. If it is a new phone then wait a bit, 3rd parties will start manufacturing them soon. If not, double check the model name to make sure it is an actual phone, simple spelling mistakes may cause you to get no results.
I’d teardown the camera and clean it with 99% Isopropyl Alcohol and then re-assemble it once it has dried. This gets most of the water damaged electronics I have worked on to turn on as it cleans off corrosion and minerals that have formed. Afterwards, test the camera and replace any faulty components.
