I'm currently in Poland, and have cell phone through Sprint in the United States. I know it is no cost for me to send text messages to the people here (My carrier has some deal with a local network that allows me to roam for free with some services), but I cannot find anything online to determine if they will be charged for texting my USA number, even though I am next door to them. Would I count as international texting even though I am on a local network for them?
I've seen some questions that are similar, but for calling, and even then the answers were.... divided. As seen here