Tmobile Iphone 5 use abroad?

I recently bought an Iphone 5 through Tmobile. I have unlimited data, text and calls. I will be traveling to Mexico in two weeks and want to use my phone for texts or to check emails (no calls) will I be charged for using my phone eventhough I have unlimited data and texts.

Yes. You will be charged for each phone call (receive or outgoing calls) by the minutes for long distance, and any texts as well. This would be charged as roaming fees since you are in another country. It can be expensive.

You unlimited talk and texts and data only apply within the United States only.