What is TTY? How it is used?

Am using iPhone 3GS I went through phone settings I found TTY in phone option can you please tell me what it is and how it is useful

What are the differences between the English and Spanish keyboards on an iPhone?

Other than the fact that "space" is labeled "espacio" and "return" is "intro", I can't tell much of the difference between the two keyboard layouts. Is there anything I'm missing or is that it? I know you can access the different accents and marks by holding on a letter, but that works with both the English and the Spanish keyboard.

Can you put music on your kindle?

I was wondering because on amazon it says that you can download it, but where? Do I put it on my kindle, my IPod, my IPhone? I just don't know please help me.
Thank you!

Added (1). I've got a Kindle keyboard just fyi. And how?

Iphone4: no reception anywhere and can't make calls or text or RECEIVE any

I'm on orange…
my iphone 4 has no reception ANYWHERE i go. I can't receive calls or text or anything but i can connect to internet and i can download and play games…
I've restarted my phone. I took out the sim and put it back
sometimes i get reception when i restart but then i can't make calls or text or receive anything…
help? Where can i get this fix? Do i need to change my sim?

IPhone 4 Text message problem?

I have a new Iphone 4 and it will not send text messages, do I have to activate anything? Or is this just a manufactor error?

Transfer movies to iPhone using iCloud?

Before you assume what the question is about, I'm already aware of how to get movies from your iTunes library (using iCloud) to my iPhone, but what's puzzling me is the fact that not all of my movies are showing when I view my "Purchased Movies". I have tried moving my movie files from my movies library to the "Purchased Files" folder on iTunes, but to no avail. Is there any other way you can download movies from your iTunes library using iCloud?

How to add a playlist to my iphone from itunes without syncing?

I do not want to sync my music.
I do not want all the music on my iphone to be erased and replaced with selected items from itunes.
I want what I have on my iphone to stay on my iphone and what I want to add a playlist that I created i iTunes to it.

How can I do this? I'm using Windows 7