A Tanzania trip is usually two holidays in one. A safari on the mainland, then a beach week in Zanzibar. Your phone will behave completely differently in each.
Stone Town and the resort strips have solid 4G. The Serengeti mostly does not. On the Kilimanjaro routes you should assume you are offline. And getting a local SIM means a shop visit with your passport, which is not how you want to spend the first afternoon of a safari.
There is also a 2026 entry rule that catches people at the airport, and it has nothing to do with phones. This guide covers ETravelSim's Tanzania plans, where signal actually works, when to go, seven places beyond the Serengeti, and exactly what you need before you fly.
Two things worth stating plainly, because most eSIM marketing does not.
Safari parks are not reliably covered. You will often get signal at lodges and near park gates, and nothing at all in between. That is the case on every Tanzanian network, because the towers simply are not there.
Zanzibar is well covered. Stone Town, Nungwi, Kendwa, Paje and Jambiani all have working 4G. Reviews of this eSIM from travellers in Zanzibar are consistently positive on that point.
Quick Tip
Download offline maps for the northern circuit and Zanzibar before you leave Arusha. Safari days cover long distances with no signal, and your guide's radio is not your phone.
ETravelSim Tanzania eSIM plans and prices
Plans run from 1 GB to 20 GB. The QR code arrives by email, no documentation is required, and hotspot is allowed on every plan.
| Plan | Validity | Price (USD) | Best for |
| 1 GB | 7 days | $6.99 | Short stay, mostly on hotel Wi-Fi |
| 3 GB | 30 days | $16.99 | One week of maps and messaging |
| 5 GB | 30 days | $24.99 | See the note below before choosing this |
| 10 GB | 30 days | $26.99 | Safari plus Zanzibar, the practical choice |
| 20 GB | 30 days | $74.99 | Heavy use, tethering a laptop |
Prices verified on the ETravelSim product page in August 2026. Prices can change, so check the product page before buying.
Worth knowing before you choose
The 10 GB plan costs only $2 more than the 5 GB plan. If you are deciding between the two, take the 10 GB. It is the best value on the list by a wide margin, and safari trips use more data than people expect because of constant map checking on long drives.
Plan specification
| Feature | ETravelSim Tanzania eSIM |
|---|---|
| Coverage | Tanzania, including Zanzibar and Pemba |
| Network | Vodacom |
| Data options | 1, 3, 5, 10 or 20 GB |
| Validity | 7 days on the 1 GB plan, 30 days on all others |
| Data speed | 4G / LTE |
| Hotspot and tethering | Allowed on all plans |
| Calls and SMS | Data-only. No Tanzanian phone number. |
| Activation | Automatic after installation |
| Delivery | QR code by email, usually within 30 minutes |
| Documentation | None required |
| Validity starts | When the eSIM is installed on your phone |
| Support | 24/7 via live chat, WhatsApp (+6592361258), and email |
Important: install timing matters here
On this plan, validity starts when the eSIM is installed, not when you first use it in Tanzania. That is different from some other destinations. Buy it whenever you like, but install it the day before you fly rather than weeks ahead, or you will lose days off the plan.
Which plan should you pick?
- Zanzibar beach week only: 3 GB at $16.99
- Safari plus Zanzibar, 10 to 14 days: 10 GB at $26.99
- Short business trip to Dar es Salaam: 1 GB at $6.99
- Tethering a laptop or working remotely: 20 GB at $74.99
- Also visiting Kenya, Rwanda or Uganda? The Africa eSIM covering 31 countries may be cheaper than buying separately
How much data do you need?
| Trip type | Typical usage | Suggested plan |
| Zanzibar only, one week | Maps, WhatsApp, some photo uploads | 3 GB |
| Safari plus Zanzibar | Navigation, daily photos, social media | 10 GB |
| Kilimanjaro climb | Almost no data used on the mountain | 1 to 3 GB |
| Remote work or tethering | Cloud sync, video calls, laptop use | 20 GB |
Safari days use less data than you would think, simply because there is no signal to use. Zanzibar days use more, because there is good coverage and a great deal worth photographing.
| Months | What to expect |
| June to October | The main season. Dry, good game viewing as animals gather at water, and Zanzibar at its best. Also the busiest and most expensive period, so book lodges early. |
| January and February | A short dry window between the rains. This is calving season on the southern Serengeti plains, which brings predators with it. Hot and clear on the coast. |
| March to May | The long rains. Heavy afternoon downpours, difficult roads, and many camps closed. Lowest prices of the year if you accept the weather. |
| November | Short rains. Usually brief showers rather than all-day rain, and a reasonable shoulder-season compromise. |
One more thing to check: Ramadan dates shift each year, and Zanzibar is a predominantly Muslim archipelago. During Ramadan many local restaurants close during daylight hours, though hotels and resorts continue serving normally.
Where to go
The northern safari circuit
Arusha is the gateway. From there, the Serengeti, Ngorongoro Crater, Lake Manyara and Tarangire form the classic route. Ngorongoro is a collapsed volcanic caldera with one of the densest wildlife concentrations anywhere. Budget five to seven days for the circuit.
Zanzibar
Stone Town is a UNESCO World Heritage site, a maze of Swahili, Arab, Indian and European architecture with carved doors on every corner. North to Nungwi and Kendwa for the calmest swimming, east to Paje and Jambiani for kitesurfing and a slower pace. Budget four to seven days.
Mount Kilimanjaro
Africa's highest mountain at 5,895 metres, and one that requires no technical climbing. Routes take five to nine days, and the longer ones have markedly better summit success because they allow proper acclimatisation. Moshi is the base town.
The southern circuit
Nyerere National Park and Ruaha get a small fraction of the northern circuit's visitors, and offer boat safaris and walking safaris that the north largely does not. Better for a second visit, or for anyone who wants space.
| Place | Best months | Why go |
| Mafia Island | October to March | Whale sharks gather here between roughly October and March, and the diving is excellent. Far quieter than Zanzibar and much harder to reach, which is the point. |
| Pemba Island | June to October | Zanzibar's northern sister, greener, hillier and barely developed. Clove plantations, steep drop-off diving and almost no tourism infrastructure. |
| Ruaha National Park | June to October | Tanzania's largest national park, with large elephant and lion populations, and a fraction of the vehicles you see in the north. |
| Katavi National Park | August to October | One of the most remote parks in Africa. Hippo and crocodile concentrations in the dry season are extraordinary. Reached by light aircraft. |
| Lake Natron | June to October | A shallow soda lake below the active volcano Ol Doinyo Lengai, and the main breeding site for East Africa's lesser flamingos. Otherworldly and very hot. |
| Usambara Mountains | June to October | Cool forested hills near Lushoto, with village-to-village walking, viewpoints over the plains and a completely different climate to the coast. |
| Kilwa Kisiwani | June to October | UNESCO-listed ruins of a Swahili trading city that once controlled Indian Ocean gold routes. Almost no visitors reach it. |
Zanzibar's mandatory travel insurance
Since October 2024, every non-resident visitor to Zanzibar must hold an inbound travel insurance policy issued by the Zanzibar Insurance Corporation. It costs around $44 per adult, is valid for up to three months, and applies to children too.
The part that surprises people: your own travel insurance does not count as a substitute. You need the ZIC policy specifically. Buy it online before you travel, save the certificate to your phone and print a copy, because immigration scans the barcode on arrival.
This applies to Zanzibar, not to mainland Tanzania. If your trip includes both, you still need it for the Zanzibar leg.
Visa
Most nationalities need a visa. Apply through the official Tanzania immigration eVisa portal rather than a third-party site, and allow time for processing. One visa covers both the mainland and Zanzibar, so you do not need a separate one for the islands.
How to install your eSIM
Before your trip
- Check your phone supports eSIM and is carrier-unlocked. Dial *#06# and look for an EID.
- Buy the eSIM. The QR code arrives by email.
- Install it the day before you fly, on home Wi-Fi. Validity starts at installation on this plan.
- Label the line so you can find it easily.
When you land
- Turn off airplane mode.
- Set the ETravelSim line as your default for mobile data.
- Turn on data roaming for that line.
- Turn data roaming off on your home line.
- Check data works before you leave the airport.
Practical quick-reference
| What | Details |
|---|---|
| Currency | Tanzanian shilling (TZS). US dollars are widely accepted for park fees, tours and hotels. Bring newer notes; older US bills are often refused. |
| Language | Swahili and English. English is widely used in tourism. A few Swahili greetings go a long way. |
| Power | Type G three-pin sockets, 230V, the same as the UK. Bring an adapter and a power bank for safari. |
| Water | Drink bottled or filtered water only, including for brushing teeth. |
| Health | Malaria prophylaxis is generally recommended. Speak to a travel clinic well before departure. |
| Zanzibar dress | Zanzibar is predominantly Muslim. Cover shoulders and knees away from the beach and resorts, especially in Stone Town. |
| Tipping | Customary for safari guides, drivers and Kilimanjaro crews, and a meaningful part of their income. Ask your operator for current guidance. |
| Getting around | Domestic flights link Arusha, Zanzibar and the parks and save a great deal of time. Road transfers are long. |
| Safety | Generally safe for visitors. Use registered taxis, avoid walking alone on beaches after dark, and keep valuables out of sight in Stone Town's alleys. |
Frequently Asked Questions:-
Does the Tanzania eSIM work in Zanzibar?
Yes. Zanzibar is part of Tanzania, so one eSIM covers the mainland and the islands. Customer reviews from travellers in Zanzibar confirm it works there.
Does it work on Kilimanjaro?
Expect very little. Some climbers report signal at lower camps on certain routes, but nothing dependable, and nothing near the summit. Treat the climb as offline time.
How much data do I need?
3 GB covers a Zanzibar-only week. 10 GB is the practical choice for a combined safari and beach trip of 10 to 14 days. Choose 20 GB only if you are tethering a laptop.
Can I use the eSIM as a hotspot?
Yes, tethering is allowed on all Tanzania plans. This is useful in lodges where the Wi-Fi is slow or limited to the main building.
Does it include a phone number?
No. The plan is data-only, with no Tanzanian number, no incoming calls and no SMS. Use WhatsApp for calls, and keep your home SIM active for bank codes.
When does the validity start?
When the eSIM is installed on your phone, not when you first connect in Tanzania. Install it the day before you fly rather than weeks ahead.
Do I need travel insurance for Zanzibar?
Yes, and it must be the specific policy from the Zanzibar Insurance Corporation, costing around $44 per adult. Your own travel insurance is not accepted as a replacement. Immigration checks it on arrival.
Does that insurance apply to mainland Tanzania?
The requirement applies to Zanzibar. If your itinerary includes both, you still need it for the Zanzibar portion. Check current rules before travelling, as the government has discussed extending similar requirements nationally.
Do I need a separate visa for Zanzibar?
No. One Tanzania visa covers the mainland and the islands.
Can I buy a local SIM instead?
You can, but it means finding a registered dealer with your passport and going through registration, which eats into a short trip. An eSIM installed before you fly avoids all of it.
What is the best month to visit?
June to October for a combined safari and beach trip. January and February suit the migration calving season. Avoid April and May, when the long rains close many camps.
Can I keep my home SIM active?
Yes, on any dual-SIM phone. Your home SIM handles calls and texts while the eSIM handles data. Turn data roaming off on the home line.
Summary
Tanzania rewards a little preparation. Buy the 10 GB plan if you are doing both safari and Zanzibar, install it the day before you fly, and download offline maps for the parks.
Then sort the Zanzibar insurance. It is a $44 policy that takes ten minutes online, and it is the one thing that can stop you at the border.
Last updated: August 2026. Plan details and prices were taken from the ETravelSim Tanzania product page and can change. Entry requirements, insurance rules and visa policies may change without notice. Confirm current requirements on the official Tanzania Immigration and Zanzibar Insurance Corporation portals before travelling.