eSIM Firsty pour El Salvador en 2026

Firsty has not published which operators it uses in El Salvador, so the radio side is unknown rather than a sign of poor coverage; the practical checks are in the table above. Its catalogue spans a large range, making data sizing the main decision and bringing a risk of buying more than a fortnight needs. 5G is the fastest technology it lists, not a promise of what a handset will show. Firsty states that top-up is available, so an exhausted plan can be extended, but has not said where traffic breaks out.