Many travel add-ons are available only by texting. Convenient but not-so-much if you need an extra few days and are already in a location where sending the text is not feasible or will cost $$$ compared to the value of the add-on. US texting add-ons already on self-serve. Please just add the others. See related topic: http://community.koodomobile.com/koodo/topics/im-already-in-mexico-help
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