When you travel, you may want to get a World SIM card that allows
you to use the same SIM card in many countries. They are not as
cheap as a Local SIM card, but they are much more affordable than
what your HOME carrier charges you for roaming.

RoamHero partnered with this Global SIM provider to help you:

National Geographic Talk Abroad Travel Phone. Unlimited Free incoming calls in 65 of the most popular travel destinations. Coverage in 105 countries.

When using a World SIM card, make sure your to unlock your phone.