IPhone 5 LTE signal on straight talk? - 1

I have an iPhone 5 w/ a personally trimmed at&t sim card on straight talk. Works well enough for personal use. The other day after adding my monthly 45$ "plan" I got LTE signal, instead if usual "4g". Didn't even know what it was, so I asked around lol. They were right it is lightning fast! Definitely noticed major speed increase. Lasted a few days, then I rebooted phone and LTE is gone and has been for days. Why did I suddenly get it? Why is it gone? How can I get it back?

An American iPhone in the UK?

I was on ebay, and the iPhone 4 in America is alot cheaper than the ones in UK.
But, I know I won't be able to use an American sim over here.
Is there anyway I can use a UK sim in it here?

Empire Four Kingdoms Hack or Cheats?

I have recently installed Empire Four Kingdoms game in my iphone 5 and i'm looking for working hack or cheats for this game so that I can have free Rubies, wood, food etc. Can anyone provide me a working cheat for it.

I'm willing to do any thing I want if it is working.