Japan and South Korea require that you have a 3G WDCMA 2100 capable phone.
If you are unsure whether your phone will work in a particular country, please contact Customer Support with your phone make and model, and what country you're visiting.
RoamingSIM has network coverage in over 213 countries across the globe, and is data capable in over 139 of those countries.
Please use the above drop down list to select a country you wish to view.