Is there a universal sim card? Iphone 5?

Is there a sim card that will work on every and any phone? I just want to use it to activate my iphone so I can than use it as an ipod. I have the iPhone 5 and I can't use it all without activating it with a sim card first after that it doesn't need one tho. I'm stuck on the page that says pick language and stuff I can't go anywhere else without a sim card. Or can I buy pre paid one?

Is the iPhone 4S Even worth it anymore?

I can go to CEX After my Birthday and pick up a Mint condition iPhone 4S 16GB for £120 ($189) I used to have an 8GB 4S about a year ago and I loved it. The only thing that annoyed me about it was that it only had 8GB Internal, 3GB was used up with the iOS, and preinstalled apps. Once I downloaded like 15 of my own apps, added like 50 songs and took like500 pictures, the space filled up.

If I got a 16GB Version, I would have like 13GB To use up,. Or if I got a 32GB Version, I'd have 28GB To use

App not on home screen? IPhone 5c?

I bought a game a few days ago since I was going into the hospital and needed something to do and it had been showing up on my home screen. Since yesterday it's not visible anymore. However, when I go into the App Store and find the app it says "open" so the game is still installed. I just can't find the icon on my home screen. I tried restarting my phone but that did not help. Any suggestions or ideas are appreciated! Oh, and I have a 5c if that matters at all.

How to avoid scratching your iPhone? Urgent?

I've just upgraded my old iPhone to a new one a few months early because my mum offered to buy me one, so now I have an iPhone 5s. I've had it two days, and my dad has bought me some more screen protectors as I don't wanna have my phone with out them. However, the home button isn't covered with the screen protector, and I don't want to scratch it. Any ideas? How to avoid scratching the sides and button? My mum ordered me a phone case yesterday but have to wait till Friday to get it.