Costs: Local data packages are extremely cheap (usually under €10–15 for a very large data volume – The amounts from the image above; e.g., 30,000 Tanzanian shillings + approx. 6,000 for the physical SIM card divided by approx. 3,000 then results in approx. €12).
Accessibility: You can call local numbers (drivers, restaurants, tour guides) cheaply.
Coverage: The 4G network is surprisingly good in populated areas like Nungwi, Paje, and Stone Town. In fact, I had no problems with reception anywhere on the island.
There are several providers on the island. I couldn’t find the provider Zantel, and I was told that it had merged with the company operating under the brand “YAS”.
The cards are widely available in Zanzibar City and can also be purchased directly at the airport upon arrival (they are slightly more expensive here than in the city, but you immediately have the opportunity to make phone calls and use the internet).
In smaller towns (Nungwi/Paje): There are many small kiosks with the logos of the suppliers.
Important information:
Passport required: In Tanzania (and therefore Zanzibar), you must present your passport to register your SIM card. A photo will often be taken as well. This is a legal requirement.
Activation: Have the SIM card activated by the salesperson in the store and check that the internet is working before you leave. Configuring the APN settings can sometimes be tricky.
Prepaid system: You first purchase credit (“airtime”) and then have to convert it into a data package by entering a code (e.g., *149*01#). Ask the salesperson if they can activate the package for you.
Pro tip: eSIM
If your phone is eSIM-compatible, you can pre-book a data package via apps like Airalo or Holafly.
Advantage: You’re online immediately upon landing.
Disadvantage: Usually significantly more expensive than a genuine local SIM card from Zantel, and you don’t have a local phone number to make calls.