IPhone 4 external speakers not working?

Just got a brand new IPhone 4 at the Verizon store went home hooked it up to iTunes and found out external speakers are not working I tried resetting it, restarting it, even restoring it. Is there anything else I can do? Should I go back to Verizon or apple store themself?

IPhone 5 case and protection?

I'm about to get an iPhone 5 soon and wanted to choose the best route for to protect it. To start off I'm looking at glass Tr for a screen protector. A case I'm still undecided, looking at the Draco Aluminum bumper. But it doesn't really protect the back. Is there anyway the glass tr will fit with the draco, and if so is there any duel glass set to protect the back.

Is it possible to change the numbers on an iPhone sim card?

My friends mom gave me her iPhone 4s and I currently have an Iphone 3gs. The sim card from the 3gs is too big so I was wondering if i could somehow change the number on the 4s sim card to my number from home or would it be better to just go to the at&t store?

Should I learn Java or Objective C?

I'm a high school student with and abundance of free time. I don't want to let it go to waste so I plan on programming. My question is, should I re-learn Java or learn Objective C. I say re-learn java because I learned the basics and a little more last year.

My goal in learning a programming language now is to become proficient at one, then get a part-time job programming while going to college. If I were to learn java, could I get a part-time job with an IT company WITHOUT a degree?

The other route is learning Objective C, coding my own iphone apps, and attempting to sell them for a profit.

Which language do I have a stronger chance of getting a part-time job with during high school/college without a degree?

How to play music from my iPhone to my AV receiver?

Just want to play music from my iPhone 4S (not iTunes) connecting it to my Denon AVR 2312 Receiver and listening to the music with my home cinema speakers. How do I do this please?

Added (1). Yes it does. Have plugged it in but sound just comes from iPhone not my speakers.

Twitter won't let me follow a particular person? - 1

Why can't I follow this person on twitter everytime I try to follow my friend on the iPhone app it says I'm forbidden to follow and when I try to follow them on my computer I automatically get signed out. It just with this person could it be that she blocked me for whatever reason. Because twitter lets me follow other people it's just her I'm having this problem with. And I don't want to ask her in case she did block me. If you could tell me what's going on and if possible how to fix it thank you.

My iphone 4 won't connect to iTunes

I bought a new phone on Ebay the other day just came today, and when the phone turns on it goes straight to the setup screen where you pick county and language etc… Anyway it then tells you to connect to iTunes. When I try to do so for some reason iTunes doesn't pick up the phone it's like it's not even plugged in, I've tried in a mac and a windows and its NOT the cable. So can anyone please help me I'm just stuck on the setup screen and it just says 'connect to iTunes'.