Keeping an eSIM installed can make the next journey easier, but keeping the profile and keeping the same data allowance are different things. A Kenya package does not become a Tanzania package at the border. The useful feature is the ability to buy another supported package for an eligible existing profile.
This Horizon guide was reviewed on 20 September 2026. It explains how that choice applies to African itineraries, alongside the alternative of buying one regional allowance. Check the options shown for your own eSIM in My eSIMs before relying on an addition.
What stays on your phone, and what you buy again
The installed eSIM profile is the connection setup on your device. A package supplies the destinations, data allowance and validity you purchased. Keeping an eligible profile may save another installation when you add a supported package; it does not give the old package new countries or unlimited lifetime data.
Open My eSIMs, select the installed profile and review the additions offered for it. Each supported addition is a separate purchase with its own terms. Availability depends on the profile and package, and some combinations cannot be added together. Follow the options the account actually presents rather than assuming every plan can be stacked.
Keep the installed profile if you intend to use this feature. Deleting it can mean needing help with installation or replacement. The eSIM top-up guide explains the account flow; contact Horizon if the expected destination is not offered for your profile.
Kenya followed by Tanzania
For a Nairobi stay followed by a Tanzania safari or Zanzibar visit, start by comparing Kenya and Tanzania country packages with a regional offer that explicitly includes both. Horizon's current Africa selection includes neither Kenya nor Tanzania.
A supported Tanzania package added to an eligible Horizon eSIM has its own allowance and expiry. Unused Kenya data does not become Tanzania data. Arrange the next package while you have a working connection and follow its activation instructions before depending on it for a transfer.
Providers such as Airalo and Saily also list broader African regional products. Their current country lists, duration and allowance may make one regional purchase more suitable for the route. This guide is written by Horizon and does not claim our separate-country approach always costs the least or is always the simplest choice.
South Africa, Réunion and an extra island
Horizon's current Africa selection includes Algeria, Egypt, Morocco, Tunisia, South Africa and Réunion. A South Africa–Réunion itinerary can therefore fit one regional allowance, subject to its validity and selected package terms. Moving between included destinations uses the same pool.
Mauritius and Seychelles are outside that selection. If either is part of the trip, compare the relevant country package or another regional product whose list includes it. Keeping one profile does not change those territory boundaries. In particular, compare Seychelles prices carefully rather than assuming that a familiar provider offers the best value.
One allowance across North Africa
For Algeria, Egypt, Morocco and Tunisia, the North Africa package offers another structure: one purchased allowance across those four countries. Libya and Mauritania are not included. If the trip stays within the listed destinations, compare this regional option with buying separate country packages.
Choose validity for the entire route. Crossing into another included country does not reset expiry, and installing the profile does not start any package: a package's validity does not begin before its first connection to a supported network in a destination it covers. Read the activation details for the plan you buy.
Sharing data and preparing for the next stop
Horizon includes free hotspot sharing on all plans, with connected devices using the package's allowance. A laptop can consume much more data than a day of messages, so check background updates and backups before the journey.
Save the next address, tickets and essential contacts offline. A valid country package does not prove that a remote road, camp or boat crossing has reception. Use the selected plan's network details and the accommodation's practical advice when preparing the route.
Check phone compatibility and the installation guide before the first trip. Keep your usual SIM only with the home operator's charging rules understood, select the intended mobile-data line, and review the exact destination and validity of every new purchase. One installed eSIM can be convenient when eligible additions are available; the package details still decide where and for how long you can use data.
