New User; can't use my wifi

Okie so i finally got my iphone 5 today and what i noticed is that i can't use my wifi. i try to logg in to twitter, apple store and it wont let me unless i turn my LTE on. does this also effect text messages cause if i have the wifi on i wont get any messages!

 

well my problem is that i can't use my wifi. For example i try to use the app store and it says no server found while i have my wifi on, but once i turn it off and turn on my LTE the app store works. i don't really know how to fix it that is why i posted my problem here. i have only tried to turn on and off my phone

 

how you do that? with my ipod it would just ask me to enter a password on my iphone it dont ask me for one!

 

problem solved