My iPhone isn't sending regular text messages?

I have an iPhone 3, and it's sending iMessages but I have many friends without iPhones so it needs to send regular text messages. I tried texting my moms phone, and she never got my message. I have the "send as SMS" thing on and everything. So what's wrong?

How to get deleted pictures back?

My friend deleted some pictures of my iPhone and I was wondering of I could get them back? I haven't updated my phone in forever do its not backed up to a computer. And I haven't got it backed up to iCloud:/ I have an iPhone 4S

Is Wi-Fi Needed For AirMusic?

I just bought an app off the AppStore, called Airmusic.
It's supposed to let you stream music from your iPhone/iPod/iPad onto your Xbox 360 or PS3 wirelessly.
The only thing is that I have the older (White) Xbox and its connected by a Ethernet Cable. Can it still work? Please Help? I don't want to have spent my money for anything.

What material is this iPhone case made of?

I found this iPhone case that I would like to buy, but I don't want to buy another silicone case. Does anyone have it? The name of the case is "Music Monsters, A lot of them", and I found it on this Swedish site: http://www.teknikproffset.se/MOBIL/Apple-iPhone/Baksideskal/iPhone-4/Music-Monsters-design-skal-till-iPhone-4--4S--A-lo.htm. If you don't want to click the link you could just google the name.

Free international text messaging from iPhone?

I'm looking for a way to keep in touch with my friends from Australia while I'm back home in the US, I've seen stuff about like AIM or Yahoo Messenger or something being able to send text messages to international numbers, but I don't know anything about it. I have an iPhone by the way, so if there was a good app for it, that would work too. And I need this to go to their actual cell phone number, they don't have a data plan or anything, but I do have data so I can get on the Internet anywhere anytime. Also they have virgin mobile if that changes anything. Also I want something to where they could text me without me like having to text them first or something like that.