Shutting off messaging on my iPhone?

I'm going to London/Paris starting Monday for 10 days. I originally planned on taking my Sim card out of my iPhone so it would be just like an iPod touch with Wi-Fi so I can still use iMessage, email, Facebook, Twitter etc.

However, I have decided to purchase an international data plan (please spare the "you don't need it", "everywhere has Wi-Fi" comments. Not everywhere does and I want it for an emergency in case I get lost and I happen to be out in the middle of the country and there's no Wi-Fi) I spoke with AT&T today and they assured me as long as I don't answer my phone if I get an incoming call I wouldn't be charged an arm or a leg.

He also suggested turning my text messages off so if people without iMessage text me, I won't be charged for it. My question is, when I turn the text messaging off and then turn it on when I return, will those texts come through? Or if someone text me when I have it turned off, I simply won't ever receive it? I didn't think about this until a ways after otherwise I would have asked in the store.

What is the average Iphone Bill with AT&T? (2012)?

My thing with thinking about iphone users is that their bill is over $100 and i'm not interested in paying that much money for a phone monthly. I would consider it, but the bill has to be reasonable…

How to upload images on the app Flashcardlet?

I downloaded the app for my Iphone to help study for microbiology tests. I want to create my own flashcards and add images of bacteria, but I have no clue how to upload the images. When I come to the screen to create these cards there's no area to upload images like promised in the app description. If anyone could help me out that would be awesome.

Also I don't want to use Quizlet to make the flashcards because they charge you do upload your own images.

Why everyone hates on the new iphone 5?

For my point of view, it's a nice upgrade!
But I see that lots of fandroids are hating on the new iphone in almost all phone forums I've been:/
androids are ugly, they don't fit on one hand, they look like a fuqin tablet for god sake!
and they look cheap because of that ugly plastic they're made of.
and almost all android widgets, in my opinion, are kinda useless,
and please stop saying that apple just made the new iphone a little longer and thinner you stuped fandroids

Where should I sell my iPhone 4 to?

I'm planning on buying the iPhone 5 September, 21. I was planning on buying an iPad but I found a better plan. If I buy the iPhone 5 then sell my iPhone 4 I will save up for a iPad 2 or 3. Anyway where should I sell my iPhone 4 too?

Is iphone 5 64GB slower than 32GB?

I'm going to be purchasing an iphone 5 soon and i may need the extra 32 GB but i could get by with just 32 GB. My only question is whether the 64 GB tends to be slower than the 32GB. If i'm going to have the extra space, i don't want it to be a slower phone.

Why is apple so successful even when their product is not that revolutionary?

Whenever apple comes with a product, a whole bunch of people try to preorder it. I have no problem with apple what so ever. How do they manage to get people to buy their things even when they are not the best out there? I mean the iphone 5 is like a book with a different cover. The newest ipad is the same thing. Do you think apple needs to make any changes to the hardware? To me, they have to change their operating system. People are tired of just swiping.