US carrier roaming / Wi‑Fi apps

How US carrier roaming / Wi‑Fi apps works in each country we track, and the local alternative where it doesn't.

• Ireland🟡Local app preferred

  Roaming may be expensive or slow; buying local SIM or eSIM offers better rates and coverage.

  Use instead: Local SIM (Vodafone/Eir/Three) or international eSIM (Holafly, GigSky, Ubigi)