Will my existing US or European SIM card incur high roaming charges when traveling in Southeast Asia?

Yes, for most travelers from the US, UK, or EU, using your home SIM card in Asia will likely result in significant roaming charges. Unlike the 'Roam Like at Home' policies within the EU, these benefits rarely extend to Asian countries. Major US carriers like AT&T or Verizon, and European providers such as Vodafone or Orange, typically charge premium daily rates or exorbitant per-MB fees for international roaming in Asia. EastESIM offers a far more cost-effective and transparent solution, allowing you to enjoy your trip without worrying about bill shock.