Can't send any texts, sprint?

Today I just switched from tmobile to sprint for the iPhone 4s. Every thing was fine until a little while ago. My bars are all there and everything with my Wi-Fi working too but every time I would try to send a text, it would tell me that it failed and to try again. Finally i turned on data roaming and now it's working perfectly. Thing is, I've heard to some horror stories about data roaming charges and have some people have said to keep it off but if I turn it back off I'm sure I'll have problems with the messaging going through again. So I'm not sure what to do:/ I'm at home by the way so not sure what the problem is

How to fix unable to download application APP could not be downloaded at this time?

On my iPhone 4s I tried to download a couple apps in the last couple of days, both pertaining to photography and photo editing, and with both apps I got the same message:
"Unable to download Application"
"Photo Editor+" could not be downloaded at this time."

and then I have two options: "done" or "Retry"

one of these apps was free, however the most recent one was not. Is there a way I can fix this?
I have the most recent software: iOS 5.1.1
It's not jailbroken, and I don't seem to have issues with any other apps or iTunes store for music.
Ok, I take that back, I've now received a message when I tried to download a game:
"MZCommerce.CreditBalanceMismatch.mobi…
And the only option is to tap "OK"
so i tried to re-download it, and it gives me that very first message I described above.

Can I trade in a Droid Razr for an iPhone?

I recently upgraded my phone to a droid razr, 7 days ago to be exact, and I found out that I don't like it. I want to exchange it for an iPhone 4s. The verizon rep told me that it's impossible to trade an Android phone for an iPhone because "we get paid differently through apple than the other manufacturers" (exact quote) and the only option I have is to return the razr, pay the restocking fee (ok with that) and then pay the full price for the iPhone (not ok).Am I being screwed or is that a policy that I'm unaware of?

Flashed Sprint iPhone 4 To Cricket?

I have a flashed sprint iPhone 4 to cricket and I went with my mom to the cricket store to get it activated and they said the couldn't or their store would get shut down. I heard that I can go to an authorized dealer to get it turned on and not a corporate store (Cricket Store) is that true because I LOVE this phone and I would like to use it on Cricket. Can someone please inform me!

My iphone keeps showing the voice command blue screen?

So yesterday i bought one of those arm bands for iphone from sports authority and that same day i used it on the gym but as soon as i putted the iphone in it stated unblocking itself an repeadetly showing the voice commands, it does this a few times then it affects the music, it restarts the song that its playing, then it moves it fast fordward and finally keeps skippin songs back and forth until it stops and automatically stops playing songs altogether… Today i didn't use the arm band and the same thing happened… I don't know if its the arm band that caused this or its some weird signal that i get when i go to the gym because none of this happened before or anywhere else, it only seems to happen when i use the earphones because i played normally everything without them… Please help because i don't want to have to delete or reset the phone!

What happened to my iPhone 4S?

I have a iPhone 4S from Sprint and I have had since February of this year. Now, the screen won't light up or turn on. I pressed all the buttons and that didn't help. Also, I left it to charge for about a hour and it still won't turn on or light up. I even tried calling it with the house phone and that didn't work either. This also used to happen when I had an android. I had to change the battery for it because Sprint said the battery was damaged. Does this mean my iPhone's battery is damaged? I never dropped it or damaged it but, I do use it all the time. Does anyone know what happened to my iPhone and how can I fix it?

IPhone 4 straight talk issue?

I have an iPhone 4 brand new 5.1.1 OS and I have microphone problems when trying to call. I made a video and tested the microphone through there and worked perfectly

I've connected a headset to the phone and it still didn't work. The person on the other side doesn't hear me. I can hear them fine.

Anyone with straighttalk and iPhones that has this problem by any chance?

Can you swap the iphone home button with another iphone?

My dad wants my old iphone4 although its broken for the button to go on his but i have messages on their that he might be able to recover that i don't want him to see, an i can't delete them obviously because its broken (water damage)