No, this is a common misconception. Grenada is an independent sovereign nation and is not part of the European Union or any domestic roaming zone for US or UK carriers. Consequently, attempting to use your home SIM card (e.g., from AT&T, Verizon, T-Mobile, or Vodafone UK) in Grenada will incur significant international roaming charges, typically ranging from $10-$14 USD per MB or day passes with limited data. CoreESIM offers a cost-effective alternative with transparent data pricing.
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Does my existing US, UK, or EU domestic SIM card include free international roaming in Grenada?
Updated April 22, 2026
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