Hi Dave,   I have attached a screen print of the country list for each GlobalESim "plan".  For Europe, the "Most Popular" plan works fine unless you are going very far off the beaten track.     Yes iMessage will work between iPhones.  iMessage sends texts by SMS only if the destination is not another apple-id (or is not logged in to their apple account).    Here is a simpler approach that is easier to configure and that we have recently used on a trip to Europe.  In