You are brilliant brandee. OMG. This whole time, I thought I was on an Android Support site. Silly me!
Oh wait, what I actually said was it only works if you are the one with the iphone (meaning I am the one that is using the iphone, which I am not). Contextually that is different than saying it only works for iphones. Again, silly me!
The problem is Apple's proprietary messaging system that doesn't release cell numbers once the user is no longer using an Apple product any more.
In my case, I had an iPhone. I got an Android phone. When someone texted me from an iPhone to my cell number it would never come through because the message was sent as an iMessage.
The only way to get this resolved was to talk to an Apple Tech who removed my cell number from their database. Since I don't control other people's phones and what their settings are, I can't force everyone to turn on SMS messages.