Can you Text an apple Iphone with the Samsung Galaxy S4, both have AT&T?

My parents have iPhone's, I have had an iPod for a while, so I don't know allot about cellular plans and texting as much. I want to get the Galaxy S4, mainly for customization and better tools and speed. If I wanted to text or call them, could I from the Galaxy, or any Samsung device?

Extra: What's the best att plan for 5 phones/lines? I prefer unlimited Web.

What will Verizon do with a Lost iPhone?

What would Verizon do if someone were to try activating my Lost iPhone 5? I have reported it on the lost/stolen list.

I had gone in with a friend who tried activating her phone, and all they did was say "This phone is on the last/stolen list, do you have another one we can try?" That's literally all they did.

I can't use Find My iPhone, the phone is Deactivated, and there's a Passcode, so it can't be tracked or anything. But, can Verizon let me know if there's a hit on the VIN or something? Anything that can be done, Apple said they can't track it either after Deactivation?

Thanks in Advanced!

Added (1). The Serial Number, not VIN, sorry.

Beats wireless problem! Can't connect them to the Bluetooth

I just brought the wireless beats and I connected them to my iphone 5 but two hours later id got into the Bluetooth on my phone and i put "forget this device" accidentally and now i try to connect them again but the beats doesn't appear in the devices searcher.

Why do my contacts still show up on my iPhone 5, but not on line?

I did not make any changes- but my contacts disappeared from Yahoo Mail when I'm on my computer - but do show up on my iphone. I can create the email on my iPhone, input the address, save draft, then open it on my computer to type the message. Clearly that is not convenient. What can i do? This is my primary email account- the addresses were created here.

Iphone and Ipad not connecting to my computer?

Both my Iphone 4s and Ipad mini were bought this week. Trying to connect to my PC to sync my stuff. Neither are recognized by the computer and neither will charge. Doesn't show signs of any connection.
I have connected them to my wall charger and they work fine. I have connected my mouse and webcam to the same usb ports that I have tried and they both work.
Previously, I had a Itouch 4g on my itunes but lost it a few weeks ago. I have windows 7 home

VLC player for iPhone 5 only plays sound?

So I was download Spongebob season one the other day as I'm in love with the series. Anyway. I figured that it would be easier to download VLC player app for iPhone than converting the.avi files to.mp4 files. As I was going to bed, ready to enjoy some spongebob I realized that the video didn't play, only the sound. So my question is: How do I fix this?

Added (1). I downloaded it as torrents from www.thepiratebay.sx, not from youtube or some other place.

Laptop and Iphone won't connect to internet?

So my laptop is the only one in my house that refuses to connect to the Internet. My Iphone won't connect to the Internet either. On my computer is says it has excellent strength but when I click connect it says "windows was unable to connect to this network". I've restarted my router but it doesn't change anything. It's been like this for 2 1/2 days now. And when i try to connect with my iphone it says it was the incorrect password when I know for a fact it's correct. What's wrong with my devices and what are some measures I can take to fix this problem and connect to the Internet? Answers As soon as possible!

Auto brightness on iPhone 4S suddenly stopped working?

Just today everything with my phone was fine. An all of a sudden for no reason the screen was just dim. I tried turning the auto brightness on and off, shutting the phone off, calibrating it. Nothing works… So now I have to have my phone bright all the time.

Anyone know how to fix it?