You are right, she is on AT&T. I used to be able to send her MMS, but not anymore. Thanks for your input--at least there is an explanation, or the problem is not too uncommon.
Sorry for my previous post. Didn't have my reading glasses on.
I can confirm the problem with the IPones as A friend of mine has the same set up and we can not send Picture MMS to each other.
You still need to get a cache cleaner so your system memory doesn't get so full. The app I mentioned would be a good start for your unrooted phone. As it will also let you know what your current available RAM is,and will allow you to free up more as well. I try not to let mine get below half of it's total. This way my system responds faster. It will also allow you to do this operation of freeing up memory Automatically in different increments(10m;30m;1h;2h;3h
if you click on the option in the menu/settings.
This app also has an app manager,Volume control with separate(some apps wont allow you to adjust the ringer and notification volumes separately) controls for ringer,notification,media,alarm,voice call,and system volumes.
It has Ringer control with silent,vibrate,sound,and vibrate+sound.
You can turn off and on Bluetooth,Wi-Fi,GPS,Auto-sync, Orientation,Haptic feedback,and change the screen brightness.
It also has a really good file manager that will allow you to as many things as you can do with a non rooted phone.
It has an installer,and uninstaller.
A startup manager that will allow you to kill user apps from starting on boot,as well as some system apps.
A Battery use moniter you can look at before you decide to kill an app.
App2sd that has almost as many options as the one by SAM LU.
Last but not least a little system info.
All in all not a bad choice for someone who is trying to save space,plus it can be moved to the uSD card.