Can I expect free roaming in Eswatini with my standard US, UK, or EU mobile SIM card, or will WorldESIM be more cost-effective?

It's important to understand that Eswatini is not part of any domestic roaming agreements for US, UK, or EU mobile plans. Therefore, you should not expect free roaming. Major carriers such as AT&T, Verizon, T-Mobile in the US, or Vodafone and O2 in the UK, typically impose their highest 'Rest of World' international roaming charges, often ranging from $10 to $15 per day for limited data. WorldESIM offers a far more predictable and cost-effective solution, providing transparent data bundles specifically for Eswatini without surprise charges.