Weird graphic issues on my iPhone's screen?

My phone got water damage that it made a stuck pixel on the upper left and has water inside the screen on Thursdsy. The water went away when I placed it in instant rice. But today there's like some lines showing up, and when it was on booting screen, it showed some blue red and green dots everywhere, I tried powering it off and ALL but still won't work. Please help! I'm using this phone for my school as there's books installed on it, school starting next 2 weeks!

IPhone push notifications suddenly not working?

This started about 5 days ago and I have never had this problem before. I suddenly have ZERO notifications coming and have to manually go to any apps/mail/texts to find that I have updates there that weren't sent to me.

All of my notifications + alert styles are turned on for each app, tried restarting, signing out of the app store, Do Not Disturb is off… What else can I do?
My iPhone 6s is up to date (ver 10.3.2) but the strange thing is that I also use an old iPhone 5 (using an old iOS) for a couple apps, and the notifications stopped there too on the exact same night. Same issue with my sister's iPhone, which was updated to latest iOS yesterday with no change.

Is this a Wi-Fi issue or is there something else?

IPhone SE or iPhone 6 - which one?

I'm trying to decide whether to purchase the SE or 6. When you look at the specs on the SE, they are nearly equivalent to those on the 6S. The only difference is they're packed into the old casing of the 5/5s. On the other hand… The iPhone 6 is the other way around. The specs are those on the 5S, but it's packed into the casing of a 6S. That being said, it's obvious that the SE is 2x faster, newer, and can still compete with other mid-range phones in 2017. My only concern is it's 4 inch screen. I'm currently the owner of a 6 inch Android phone screen… I'm pretty sure you can see where I'm coming from. Now, you may be thinking well you basically just answered your question - if you want a faster phone go with the SE and if you want a bigger phone that's a little outdated, then go with the 6. To me it's not that simple; both are within the same price range, but I don't know if the switch to a smaller screen is worth as I haven't had a 4 inch screen since 2010-2013.

Besides the screen size and speed, is there something better that I left out that makes one of them better than the other one? Please leave your personal opinion/experience or feel free to leave an answer even if you are not an owner.

Is Cashiphone a reliable site to sell my IPhone 5S on?

I recently sold my IPhone 5S that has part of the upper screen cracked but it still works and turns on and they said they will pay me $30.00 cash and send it into my PayPal Account within 3 business days and it's been 5 days now. Has anyone else used Cashiphone to get cash for their IPhone and is it a reliable website to sell on?