Difference between iPhone 6s and 5s? Should I just get the 6 plus?

I know I asked this question but I have more information to add. I'm looking for a big phone even though the 6 plus is big. I wanna know the differences between the 6 and 6s because if I like the 6s I can't just get the 6s plus. I need some differences. I use my phone ALOT in school and at school (BTW I have permission). So I need a big battery phone. Also is a life proof case also waterproof because I like to take pictures in the pool and my phone cracks a lot so I need a protective case?

Can I use an ee contract sim in a new unlocked iPhone?

I'm just over a year into my contract so has just under a year to go but I want a new I have the hoc desire 610 at the moment but I want an iPhone 5s or 6. I believe that it is a Nano sim but I was wondering if it is possible to buy a used but unlocked iPhone and just use the SIM card still as I'm half way through my contract.

Is my classmate jealous of me?

Well this is what happen we were at school. I was talking to a classmate and this girl L that s what her name starts with. So as I was talking she said look how ugly R is. IIm like why would you say that in my mind. She is jealous that I have a iPhone 6s and that IIm cute. She is dumb 29 on a test. She has no hair and when I said that the bus driver hair is better that this boy k at our group she said in going to tell that your bragging but I wasn't. She has hair on her face and I don't. When I tell on her she won't be happy I will beat her up if see she ever put her hands on me.

Why is it so complicated to backup my iphone with icloud?

It was suposedly backing up then when I went on my icloud account the only thing saved on there was my calendar events. Pictures and contacts were not saved despite being turned onto be backed up. This is getting annoying, now it is telling me it couldn't even complete the backup if I try to do it again. My last one was yesterday, I tried to do it again today and it won't go thru. This is frustrating!

Why does Flickr not show my Photostream?

I have 252 photos on my photostream, and I can see any of them. It has been working fine until now and I can't view them on my laptop, iPhone or iPod.

For some reason however, I can view them on the 'Camera Roll' in Flickr.

Anyone know what's up?