I think I know the answer to this question. I'm looking for a US 10 day add-on with more than 250mb of data. I'm looking for closer to 1GB. So my only option is the 30 day plan? It's cheaper than paying the data overage.
And when it says: "Text messages exclude MMS messages (picture& video)". Does that lead to failed messages if an image is attached, or text sent/received without image, or extra billing?