Going to be on vacation in Mexico. I need to bring my phone so I can skype my girlfriend there. On a regular TAB50 plan, I get charged for receiving/sending texts when I am in Mexico to Canada. 1. Is there a standard procedure I should do when I am on vacation to avoid extra charges? (e.g. Turn airplane mode during day, then turn off airplane mode during night and use WiFi to Skype.) 2. But when I turn it on, would the text come in and I get charged anyways? Any help would be greatly appreciated!