Will I have a signal in the San Blas Islands, Panama?

Yes, but expect some variation. The San Blas Islands are a true paradise, and while you'll generally find a signal in the more populated areas and near larger islands, coverage can become spotty as you venture to smaller, more remote islets. SouthESIM connects to the best available local networks in Panama, which will give you the strongest chance of staying connected. You'll likely have enough signal to send messages and occasional updates while enjoying the pristine beaches and vibrant Kuna culture.