Buy a plan
Pick a destination, data allowance and validity period.
Sao Tome and Principe eSIM
CST 4G
Free hotspotFree hotspot on every plan No throttling on fixed-data plans
How much data, for how long?
7 days
15 days
Validity does not start until your eSIM connects to a supported network at your destination. There is no deadline for first use. You can buy now and keep your plan for a future trip. Full refund on request, used or unused. We always refund the full amount you paid when you request it, whether your eSIM is unused, partly used or fully used. There is no time limit for requesting a refund.
Going elsewhere too?
Add another country — each one is its own eSIM, all managed in one app.
Sao Tome and Principe
1 GB · 7 days
Total
€15.29
There is no deadline for first use. You can buy now and keep your plan for a future trip.
São Tomé and Príncipe eSIM for the capital and two-island stays
Plan data for a São Tomé arrival, a coastal stay or a separately booked journey to Príncipe. This data-only eSIM depends on local reception, with conditions varying between towns, forested slopes and smaller coastal settlements.
São Tomé and Príncipe is a country of two main islands in the Gulf of Guinea, with the capital on São Tomé. The name of the country can hide an important itinerary detail: a property on Príncipe is not a road transfer from São Tomé's airport. Coastal drives, former plantation estates known as roças and an inter-island flight each need their own host and arrival instructions. Save the Portuguese place names from the booking so that similar-looking accommodation descriptions do not send you to the wrong island.
Refund policy
We always refund the full amount you paid when you request it, whether your eSIM is unused, partly used or fully used. There is no time limit for requesting a refund.
No first-use deadline
Validity does not start until your eSIM connects to a supported network at your destination. There is no deadline for first use. You can buy now and keep your plan for a future trip.
Secure checkout
Cards, Apple Pay & Google Pay — encrypted by Paysera.
24/7 support in all languages
Instant replies guaranteed.
How eSIM works in Sao Tome and Principe
On an unlocked, eSIM-compatible handset, install the profile using Wi-Fi before the long-haul journey. The airport serving São Tomé is near the capital; arrange collection using the actual property name and island. In the destination, enable the installed line, select it for mobile data and follow the supplied data-roaming instructions. Installing the profile does not start the validity period; it starts when the eSIM first connects to a supported network in São Tomé and Príncipe. Keep Príncipe flight confirmations and the receiving host's details downloaded before the island change.
Install your eSIM
Scan the QR or auto-install in the app — no physical SIM.
Land & connect
Data activates on first connection at your destination.
Size it to your trip
Pick the profile closest to your trip. The estimate assumes normal use — maps, messaging, photos, a short call home.
As a rule of thumb, a 3–4 day city break runs on about 1–3 GB, a one-week trip on 3–5 GB, a two-week multi-country tour on 8–12 GB, and working on the road takes about 1 GB a day, so 15 GB or more for two weeks.
Recommended size
3GB3–4 days
≈0.4 GB a day
- Maps every day
- Messaging and photos
- A short call home most days
In total, a 1 GB data allowance covers roughly 330 shared photos, 17 hours of social media and browsing, 2.9 hours of video calls, 13 hours of music streaming, or about 200 hours of maps and navigation. Messaging apps barely use data.
All Sao Tome and Principe eSIM plans
Important cities in Sao Tome and Principe
São Tomé · City guide
São Tomé
São Tomé city is the first organising point for many arrivals, but the lodging may be outside the centre or much farther down the coast. Save the airport pickup separately from any city appointment. A working connection here is useful for checking onward details, without proving service at a remote estate or beach property.
São Tomé eSIM — set up before you flySanto António · City guide
Santo António
Santo António is on Príncipe, with an arrival through Príncipe Airport requiring local onward collection. Give the accommodation the inter-island booking details rather than only your international flight to São Tomé. Store the property directions and return-flight arrangements before leaving the first island.
Santo António eSIM — set up before you flyNeves · City guide
Neves
Neves provides a useful geographical reference for a coastal family visit or work appointment on São Tomé. Ask the host for the final turn and entrance rather than relying solely on a town marker. Inland detours and forested slopes can have different reception conditions from the coastal settlement.
Neves eSIM — set up before you flyWhy Horizon
Give each island its own arrival plan
Count the entire two-island stay when judging the displayed validity, then estimate the data needed for host updates, map checks and occasional photo uploads. Horizon includes free personal hotspot sharing on a compatible device, so a companion or laptop draws from the same allowance. Horizon fixed-data plans have no throttling. Forest terrain and isolated accommodation can still interrupt access. Settle the next pickup while connected, and use accommodation Wi-Fi for large transfers if the fixed allowance needs to last until the flight home.
Horizon eSIM Before you travel
Plan for
Sao Tome and Principe
Compare plan details
Check device compatibility
Install over Wi-Fi before departure
- Flexible choice
Better plans, built for real trips
Compare the listed data allowances and validity periods for your destination.
- Before departure
Easy to use
Install over reliable Wi-Fi before departure and follow the plan's activation instructions.
- Clear comparison
Compare the full plan
Review the current price, data, validity and coverage before checkout. Horizon fixed-data plans have no throttling.
- Reuse when eligible
Reuse an eligible eSIM
When the selected plan supports reuse or top-ups, My eSIMs shows the eligible options for the installed profile.
- Usage control
Stay connected
We'll alert you as you approach your limit. If the plan supports a top-up, My eSIMs shows the eligible options.
- Multi-country
Global & regional plans
Choose country, regional or global coverage and check every destination in the plan details.
Frequently asked questions
Are São Tomé and Príncipe separate country destinations?
They are the two main islands of the same country. An inter-island journey does not itself add a country, but it needs a separate transport booking and does not establish that reception will be the same on both islands.
Can I reach a Príncipe hotel directly by road from the airport on São Tomé?
No. Príncipe is a different island. Check the inter-island flight and then the property's local airport collection. Save both stages, especially if the international and domestic travel fall on different days.
Should I expect reception at every roça or forest lodge?
No. The site's position, terrain and local infrastructure affect access. Ask the property about its actual communications before relying on mobile data for work, and download its directions and booking confirmation in advance.
Does this country plan include Gabon or Equatorial Guinea?
Neither is part of São Tomé and Príncipe, and neither is added by a country plan for these islands. If the journey includes an African mainland stop, organise that destination's data separately and check the exact product list.
How should I budget data across both islands?
Leave room for flight changes, accommodation messages and the final airport pickup after accounting for uploads. The same allowance serves the phone and any hotspot-connected devices, so repeated photo backups can reduce what remains for those practical tasks.
Will I receive a local number for accommodation contacts?
This eSIM provides data only and includes no local number, ordinary calls or SMS. Agree an internet contact method with each property and keep its physical arrival instructions available if mobile access is unavailable.
Will Horizon slow down my data?
No. Horizon fixed-data plans have no throttling. There is no daily limit that slows you down, so you can use your whole plan in one day if you need to. Your speed depends on the local network, your signal and how busy the network is. When your data allowance is used up, the plan stops rather than slowing down.
Can I get a refund if I already used some data?
Yes. We always refund the full amount you paid when you request it, whether your eSIM is unused, partly used or fully used. There is no time limit for requesting a refund.
Where next
