Why won't my Wi-Fi on my iphone 5 work?

This is the 3rd Iphone 5 I've had so haven't had much luck with them. The one I have was terrific up until now. I don't know what happened but for some reason my Wi-Fi just won't connect and turn on. My home Wi-Fi pops up and starts loading but it never connects to my actual phone. I've tried re-setting some of my preferences but i don't know what to do and this phone has some photos that need to be sent to a client so it needs to work as soon as possible. Also how do i download photos from my Iphone onto my computer?

My iPhone froze but it would still scroll

I was deleting apps from my settings page then my phone froze. It would still scroll and I could change settings. But my home and lock button wouldn't work it wouldn't turn of or automatically lock. When people would call it wouldn't ring. What was wrong with it? It worked after it died

What app can I use to change the sound of my voice in videos I record?

I have a android internet tablet. I want to make videos but I need an app that changes the voice to a chipmunk for example. I want to use Tre Melvin's videos or Freddy_E's video's on youtube as an example. I' ve looked around an just can't find what I'm looking for. An app like the voice changer camera but for android NOT ipad/iphone.

Can I use my iphone abroad if I take out the sim card?

I'm going to england and i have 2 questions
1) Will the iphone still function if i take out the sim card? Like can i use Wi-Fi and take pictures?
2) if i leave the sim card in, how can i make sure i won't get any roaming charges at all?

Is there a small bag to carry all of these?

Is there any small bags to carry this stuff in?

I'm going on vacation in a week or probably longer than that and I need to get a small bag. I'm bringing only: My phone, my phone charger, a book, 2 LPS toys, and One Direction Book.
Here's the picture of the the stuff to determine the size:
iPhone 4S:image

iPhone 4S charger: http://images02.olx.in/ui/2/66/10/1354116741_460006610_1-original-genuine-iphone-4s-charger-for-

Book:

2 LPS toys like this:image

One Direction Book:

Is there a bag where I can fit all of this and is there a possibly small bag size to fit this?

What's the real difference between iPhone 4, 4S and 5?

The only difference that I can really see is the 4 inch screen but does that really justify someone upgrading from an 4, or 4S? Oh yeah and the processor is slightly faster, but are there any radical changes to the phone like there was between the iPhone 3s and the iPhone 4? Is there someone out there who has an iPhone 5 is it really any difference between that and the 4?

When you want to change from iphone 4 to iphone 5 do they transfer your pictures too?

I have an iphone 4 ( with Sprint ) and i already have 2 years with it so i can upgrade and i'm wondering if i should because i have my pictures ( i know your contacts they do transfer them if had it done from a blackberry to my iphone 4 two years ago ) so i have my prized possessions ( my pictures ) and i don't want them lost so i'm wondering if i should, somebody give me answers!