Is data roaming free in Gibraltar if I have a UK SIM card from carriers like O2, EE, or Vodafone?

It is a common misconception that roaming in Gibraltar is free with a UK SIM card. Although Gibraltar is a British Overseas Territory, it is not considered part of the UK for roaming purposes by most major UK carriers. Post-Brexit, many providers, including O2, EE, and Vodafone, have excluded Gibraltar from their free-roaming zones. Consequently, using your UK SIM there will likely incur expensive 'Day Pass' or per-MB charges. WestESIM provides a cost-effective and reliable alternative, ensuring seamless connectivity without hidden fees in Gibraltar.