Why is my Iphone 6 flash not working?

So exactly a week ago my phone fell in the toilet but it survived and has been working completely fine. Last night oddly my flash on my rear camera stopped working. When I press the flashlight button nothing comes on, and when I go to take a picture with flash the flash flickers dimly and then just takes a really bad photo (the weird thing is that my flash had been working perfectly hours before as I needed the flashlight to look for something). The crazy thing is that when I press for the flash to be ON when making a video, the flash light comes on just as bright as ever and I'm able to make videos with flash, but not pictures nor use the flashlight option. I have no idea if the water damage from a week ago is causing this (which would be weird since it works fine for videos). Can someone please help?!

Iphone 5s verizon unlocked already?

So I'm buying this 5s from my friend and it is on verizon and I currently have metro pcs, can I just take the phone and get a metro pcs sim card without going to verizon?

How to fix my iPhone 5s screen? - 1

I replaced my iPhone 5s screen by myself and I have done this before but this time when I turned on the screen it was blurry, fuzzy and faded. Can I fix it on my own? I don't know what I did wrong this time, I did the exact same thing as I did last time.

I can't redownload purchased music on iPhone?

So I bought "untitled unmastered" by Kendrick Lamar when it came out. I was recently going through my music on my phone and accidentally deleted it from my phone and iCloud. I go to iTunes and it says "purchased" and I can't redownload it, or even repurchase it. I can't seem to find a solution anywhere, and I'm out of ideas.

My Iphone 6s makes crackling noises when I plug in earbuds/earphones?

Can someone please explain to me how to fix the crackling noises my Iphone makes when I plug in earbuds. It does not make weird noises when I play it without headphones; but only when I plug something in to privately listen to music and etc.

Added (1). I don't think the earbuds/headphones are the problem because I recently used new ones, but it still makes crackling noises

Can I use facetime with internet but no Wi-Fi?

I'm studying abroad this summer in Spain and I know that I will have internet access but we may not have Wi-Fi. If I don't have Wi-Fi, will I still be able to make facetime calls for free over the internet? I'm not really sure what the difference is. I have an iPhone and a Mac as well, so I don't know if it's different over the phone vs computer since I could use both. Do I need Wi-Fi? Or is internet okay?

Accidentally deleted text messages?

I accidentally deleted text messages between me and my boyfriend and I want so badly to know how to retrieve them back. I have an iPhone 6+. Any help for me to be able to retrieve those messages are greatly appreciated.

IPhone SE vs iPhone 6S (NOT the plus)?

So I'm in need of a new phone soon. I used to be an Android person, but none of their phones are appealing to me right now.
I currently have the iPhone 5 and the battery only lasts for a maximum of 2 hours, even airplane mode can't save it.
I'm looking for a phone with great picture quality, great battery life, and fast speed.
I understand that the iPhone SE is the cheaper option, but after using my friend's iPhone 6S I think I like the bigger screen more.

Any ideas?