Can't download apps on iPhone?

I got the iPhone 5 today and It won't let me download any apps. When i was in the store it was working but after i left it wasn't I first tried to turn off and then turn on the phone again but that didn't help. I then called the store and they said to reset the network and after i did that it worked but then it stopped again. I tried to repeat the process but it still isn't working. I even logged out of my apple id turned of my phone and then logged back in. Anybody know what else i can do! I don't want to go to the store. It's really out of the way!

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  • Why do apps download on other devices when I download on my iphone? Okay so for the past few months I've downloaded some apps and I noticed that those same apps download on other devices such as my parents iPhones and iPads. How can I stop that from happening?
  • Why can't I download some of the apps on my iPhone? Okay, so I wanna download apps onto my iPhone 3G. Some work fine, but when I try to install others, it comes up with a message telling me that the app is incompatible with my iPhone? Why? And is there anything I need to do to change the compatibility of my iPhone with certain apps or something?
  • Why can't I download apps on my iPhone? It was working fine but now it says I have to read and accept the iTunes terms and conditions. I clicked agree and it still didn't work?
  • Why can't i download apps on iphone 3g? I've had a 3g before but i broke it. My brother gave me his old 3g and I can't download apps on it, it says i needed to upgrade it. So i tried, and apparently i can't? WTF IS GOING ON? AND WHY IS APPLE ***. If i have to upgrade to an iphone 4, i'm going to cut sick.(i'm poor) please help me.