No, roaming is not free in the Cayman Islands with your US (AT&T/T-Mobile) or UK SIM card; it is not included in domestic plans.
This is a common roaming trap for travelers. Although the Cayman Islands is a British Overseas Territory, it is not part of the United States and is not included in the EU's free roaming zone. This means your domestic plan from carriers like AT&T, T-Mobile, or Verizon in the US, or Vodafone and O2 in the UK, will not cover your usage here.
While your existing SIM card will generally connect to local networks in Grand Cayman and other islands, it's vital to understand the costs involved. Your home carrier's service will function, but:
- Your domestic plan benefits will not apply.
- You'll be charged expensive international "Day Pass" rates.
- These daily passes typically cost $10-$14, quickly adding up during your trip.
Many travelers find these daily charges to be a significant and unexpected expense for cell service in the Cayman Islands. For a more budget-friendly approach, a eSIM Scout eSIM offers a one-time prepaid fee for data and calls, which is significantly cheaper than paying daily roaming charges from your home carrier.