I like Option #4. I have used alternative software and that's option always worked best for me. But all those options, are good. It gives people a choice. I will be purchasing this software very soon. Thanks for the support. If I have anymore questions or comment's, I will be back.
Dev: You have a thread over at AndroidCentral
. Feel free to chime in over there. The Virgin Mobile community ($25 unlimited data, 300-minutes, unlimited text) is very big over there. So you can see, why they would love your app (for when low on minutes). You could post a thread in the Application Forum