Compare eSIMs for Sao Tome and Principe 2026

Unitel STP is the local network named behind these travel eSIM offers; brands such as Telcomia, Roamless, Nomad, UBIGI and MeSIM sell access rather than operate the network themselves. There is a genuine choice in Sao Tome and Principe, though not the breadth found in the busiest destinations. Catalogues differ, so a familiar provider may have a plan that is too small or too short for your stay. Check the data allowance, validity and whether you can top up when it runs out or would need another plan.

Unitel STP is the sole local operator named in provider listings for travel eSIMs here. The network choice is effectively settled when you choose a provider: its listed arrangement puts the eSIM on Unitel STP, rather than offering a separate local operator selection. Allowance and plan terms are therefore the differences to compare, not which local network to use. A provider’s listing records what it says it uses; it is not evidence of signal strength or coverage across the islands.

A zero-priced data option is listed for São Tomé and Príncipe, but it is a small sample rather than a plan for a whole trip. It usually comes with a sign-up condition, so treat it as a way to get basic access on arrival, not something to rely on throughout your stay. With a dozen or so providers selling here, free data is an exception rather than the norm.

Several sellers offer plans labelled unlimited in this crowded market, but the label alone says little: the amount of data at full speed and when it renews vary between plans. After that allowance is used, data continues more slowly for the stated period; video may stop working and maps can become sluggish, though messaging may still be usable. Check the allowance and reset terms for each plan before choosing.