About iphone 5 backup and restore?

Hi! I made a backup of my iphone just now and i wanna restore it. But when i do it says that i don't have enough space on my device.

Do i have to delete everything on my device before i restore it?

Do I wait for the iPhone 7 or get the iPhone 6s?

I'm suppose to be getting the iPhone 6s tomorrow and i've been waiting for months for it and today my dad told me his co-worker hates hers and wants the iphone 7 but my friends love theirs.

IPhone 6s icon/screen slightly larger than others?

I've noticed my iPhone 6s screen was kind of big. It's noticeable when going through apps or settings and especially the previews for messages and the text bubbles themselves. I put my phone side to side with two of my friends phones (with both 6 & 6s) I found that my phones text bubbles and preview area things were maybe 1 1/2x the size of theirs but it didn't take until I saw everyone else s phones to realize mine was bigger. It has nothing to do with the zoom feature and my phone says it's on standard so I don't know how to get it smaller. I d like to change it back but I don't know how it got this way or how to change it back. Please help, my phone was set up in the Verizon store and has been this way since I got it. Id just like to know how to change it to normal, smaller setting

How high are bearded dragons pain tolerance?

My bearded dragon is 7 months old and I accidentally dropped my iphone on his head. He didn't do anything but just look at me with a look like, "wtf?" I can't help but laugh but I feel HORRIBLE for doing so. So with that being said, he's okay but did it really hurt him? How high are bearded dragon pain tolerance? I tried to look it up on google but I couldn't find anything.

Can I trade in my iPhone 6 for a new one?

Okay so like, I dropped my iPhone 6 and the screen cracked quite a bit. I wanted to know if I could go to T-Mobile and ask to get a new one (I have insurance on it too) and if I would have to pay or since it's my first time I ll get it free.