Is there a way to fix gray photos on iPhone 5s?

I took a burst on my phone camera and when I went to go see the photos, the were just shown as gray rectangles. The thumbnail on the camera roll still showed the actual image, but when I clicked it it just shows gray. Is there a way to fix this?

Iphone 6 plus not getting past the apple logo while charging?

I have an iphone 6 plus that I stopped using for about a year now. I'm trying to switch back to it but it is completely dead. I put it on the charger and it says it is charging and every 10 or so minutes the apple logo will come on and then it goes back to the charging screen it shows when a iphone is dead. Is there any fix to this considering there was no problems before I stopped using this iphone?

Can I erase my iPhone without affecting my new one?

My friend bought an iPhone 6 but never even touched it, so he gave it to me. I have an iPhone 5s. I took out the sim card from the iPhone 5s and put it in the iPhone 6. I then used iCloud to put in some of my stuff on the new phone (some stuff transferred, some stuff didn't (ex. My photos didn't transfer but the backup was also from January of 2016 so I expected some stuff not to work)). I'm still getting texts on the iPhone 5s though, and some of my texts aren't sending in to my iPhone 6. Can I wipe my iPhone 5s to factory settings to just kind of get it to stop receiving stuff? Or since the phones are "connected" through iCloud, will that affect the iPhone 6 and wipe stuff off of it? Honestly, I don't understand anything that has to do with the iCloud and stuff so I know maybe these questions are stupid but help.

Iphone 6s says no sim card?

All of the sudden I woke up and my phone said No Sim. So I held down the power and home button to see if it changed and then it changed and then all of the sudden it says No Sim again. I'm trying to pop open the sim tray with a paper clip and it won't budge. I think I got a little bit of it stuck in there. I'm just confused, i'm a 15 year old girl so i'm not Tech. Savvy

Is buying a DSLR camera worth it?

So I have an iPhone SE and the camera is pretty good. I was looking to purchase a Canon T5 camera to take pictures and record video with, but I don't know if it is worth it. Most things I read show how iPhones are pretty equal to DSLRs.