Capped data plans
Ranked by price per gigabyte. Only plans valid for the trip length shown are included.
Unlimited data plans
Ranked by price per day. Unlimited plans have no price per gigabyte, so they are never mixed with the capped list above.
No plans match those filters yet.
The short answer
Written to stand on its own, so it stays true wherever it gets quoted.
As of 4 September 2026, the cheapest travel eSIM for São Tomé & Príncipe is Roamless at $17.95 for 1 GB valid 30 days, out of 4 plans from 1 providers (Roamless).
By the numbers
Figures written to be quoted whole — each carries its own units, scope and date.
Across 4 capped plans for São Tomé & Príncipe, cost per gigabyte ranges from $12.99 to $17.95, a 1.4x spread, with a median of $17.73. Checked 4 September 2026.
Common questions
What is the cheapest eSIM for São Tomé & Príncipe?
The cheapest travel eSIM for São Tomé & Príncipe is Roamless at $17.95 for 1 GB over 30 days. Prices were last checked on 4 September 2026.
Which São Tomé & Príncipe eSIM has the lowest cost per GB?
Roamless offers the lowest cost per gigabyte for São Tomé & Príncipe at $12.99 per GB (5 GB for $64.95 over 30 days).
How many eSIM providers cover São Tomé & Príncipe?
This page compares 4 plans from 1 providers for São Tomé & Príncipe: Roamless.
What the terms mean
Defined here so a price can be read correctly rather than guessed at.
- eSIM
- A SIM profile downloaded to a phone rather than inserted as a plastic card. A travel eSIM sells data in a destination without changing the phone's usual number.
- Throttled unlimited
- A plan whose data never runs out but which drops to a reduced speed after a stated full-speed allowance. It is not equivalent to an uncapped plan.
- Price per gigabyte
- The total plan price divided by its data allowance, used to compare capped plans of different sizes. It cannot be calculated for unlimited plans.
- Price per day
- The total plan price divided by its validity in days, used to compare unlimited plans, which have no per-gigabyte figure.
- KYC
- Identity verification some providers require before a plan can be activated, typically a passport scan.
- Top-up
- The ability to add more data to an eSIM already installed, rather than buying a new one.
How these prices were collected
This page compares 4 plans from 1 providers for São Tomé & Príncipe. Prices are collected automatically from each provider and were last checked on 4 September 2026. Figures are converted to USD so they can be compared; you are charged in the provider's own currency at their rate. Links to providers are affiliate links.