You have 2 options. In foreign countried there is one flat rate for incoming and outgoing calls as well as data. Basicaly you have to decide if you're gonna be calling the us or local and if they are going to be calling you. From us to you is a local call if you keep your tmo sim, however you pay the roaming charge (checltmo.com for rates).. If you're calling home a lot, its prob best to keep tmo sim. You just need to look into the roaming rate and your needs and see which solution fits. The intl option is free to have, and charges you a flat rate as stated above. Feel free to contace me with more ?s if ya have them
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