eSIM for Tonga

Viasimo's Tonga eSIM starts at $5.99 for 1 GB over 7 days, running on Digicel with 4G LTE where available. Plans last 3 to 180 days, arrive by email in minutes and install from your phone's settings, with no app.

Works everywhere in Tonga

Haapai
ʻEua
Niuas
Tongatapu
Vavau

Select your planIn stock

Duration

Quantity

Unlimited data · 3 Days$28.99

Unlimited data · 3 Days ×1

$28.99

Going to more than one country? See regional plans

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Dial *#06# on your phone. If you see an EID number, your phone takes an eSIM. Most phones sold since 2019 do.

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Network

Which networks does the Tonga eSIM use?

Host networks: Digicel

Your eSIM picks one automatically; you do not choose or switch between them.

Data: 1 GB – 20 GB or unlimited
Validity: 3–180 days
Speed: 4G LTE
Hotspot / tethering: Supported on most devices
Activation: Starts when you first connect in your destination
Speed management: Roughly 2-3 GB per day at full speed, sometimes less depending on the local carrier, then reduced
Top-ups: Add more data from your account, before the plan expires
Text messages (SMS): Data only: use an app for verification codes
Connects via: Singapore
Unused validity: 180 days before it must be installed

Setting up Buy, scan the QR code we email you, and switch on the travel line when you land. How it works

Choosing a plan

How much data do you need?

The allowances below are our sizing recommendations, not measurements. The plan beside each one is the cheapest option on this page that covers it.

Recommended data allowances matched to the plans sold for this destination
You are	Plan for	Cheapest plan that covers it
LightMaps, messaging and the occasional lookup	About 1 GB a week	$5.991 GB, 7 days
TypicalMaps, social, photos and some browsing	About 3 to 7 GB a week	$21.995 GB, 30 days
HeavyVideo streaming, video calls and uploads	10 GB a week or more	$37.9910 GB, 30 days
Working or sharingTethering a laptop, calls and cloud sync	20 GB a week or more	$63.00Unlimited, 7 days

Work it out from your own habits

What a week abroad costs

eSIM, local SIM or roaming?

Charged per day

Your carrier roaming

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A SIM at the airport

$5.99

Viasimo, one bundle

Only the Viasimo figure is a price: it comes from today’s live catalog. The other two rows are directional, not quoted rates.

About this eSIM

Landing at Fuaʻamotu (TBU)

International flights land at Fuaʻamotu International Airport (TBU) on the south side of Tongatapu, about 20 km from the capital, Nukuʻalofa. The scheduled international routes are short: Air New Zealand from Auckland, Fiji Airways from Nadi and Qantas from Sydney. Most travellers from further away connect through one of those three cities.

Switch your eSIM on as you land so you can message your accommodation about the 20 km drive into town. If you're going on to the outer islands, the domestic airline Lulutai Airlines flies from Fuaʻamotu to Vavaʻu, Haʻapai, ʻEua and the remote Niuas. Check your connection times on your phone before leaving the terminal. If your onward flight is the next day, confirm it the evening before while you have a good connection in town.

Tonga is on UTC+13, one of the first time zones to start each new day. That means it's a day ahead of the Americas and usually ahead of New Zealand and Australia, so check dates carefully when you're messaging people at home or confirming bookings.

One network on a small, scattered country

Tonga has about 100,000 people. Roughly 70% live on Tongatapu, and in 2021 there were around 64,000 mobile subscriptions in the whole country. Your eSIM connects to Digicel, which played an important role after the 2022 eruption (see below). Wikipedia notes that 4G is available on the main island, so expect your best speeds around Nukuʻalofa and the more populated parts of Tongatapu. On Vavaʻu, Haʻapai and ʻEua, and especially away from the main villages, you may find slower service or none at all.

Because there's only one undersea link to the rest of the world, any problem with the cable affects every network and every hotel's Wi-Fi together. Have a basic plan for being out of contact, such as agreeing with family that no news isn't bad news.

Tongatapu versus the outer island groups

Tonga's three main island groups are Tongatapu in the south, Haʻapai in the middle and Vavaʻu in the north. ʻEua, a short hop from Tongatapu, and the far-northern Niuas are separate districts. Almost every visitor starts on Tongatapu, where the capital, the international airport, government offices and most shops are. The outer groups are where the whale-watching, sailing and quieter beaches are, and they have far fewer people.

Treat Tongatapu as the place to sort out anything that needs a reliable connection: rebooking flights, downloading maps for the outer islands, uploading photos or making video calls home. Once you move to a small island in Haʻapai, or out on the water around Vavaʻu, assume your data will be slower and patchier, and that your accommodation's Wi-Fi may be your main link.

What you'll use data for here

Most of your data use will be practical. You'll be confirming domestic flights and boat transfers, arranging whale-watching or diving trips, and messaging guesthouses and small operators, many of whom you'll reach through WhatsApp or Facebook Messenger rather than a booking website. Maps help on Tongatapu, where village roads aren't always clearly signed.

Plan around Sunday. With commerce and entertainment shut, use Saturday to shop, fill up the car and confirm Monday's arrangements while businesses are still answering messages.

Before you fly

Install the eSIM at home and make sure your phone is unlocked. Save offline maps of Tongatapu and any outer islands you'll visit, plus copies of your flight, ferry and accommodation bookings. Keep your home SIM in for calls and texts, pack a power bank, and bring an adaptor for Australian-style Type I sockets.

Unlimited runs at full speed up to a fair-use limit, then continues slower.

Before you buy

Important to know

This is a data-only eSIM. It carries no calls or SMS on its own number.
Your existing number stays on your primary SIM, so calls and verification texts keep working.
Your phone must support eSIM, and some carrier-locked phones cannot install one.
Signal varies with location, terrain, congestion and your handset. Dense urban areas are consistently better served than remote ones.
The eSIM selects a host network automatically. You cannot pick or switch between them.
Unlimited plans run at full speed up to a fair-use limit, then continue at a reduced speed. Read the fair usage policy

Looking for more information?

Frequently asked questions

Does an eSIM work in Tonga?

Yes. Your Tonga eSIM connects automatically the moment you arrive, with no roaming fees and nothing to set up at the airport. The host networks it can use are Digicel. Coverage runs on 4G LTE. There is no 5G on our host network in Tonga yet.

Do I get 5G in Tonga?

No. Digicel do not yet offer 5G to visitors in Tonga, so your eSIM connects over 4G LTE or slower. Anyone claiming 5G for this destination is quoting a spec sheet, not the network you will actually get.

How long was Tonga without internet after the 2022 eruption?

About five weeks for Tongatapu. The Hunga Tonga–Hunga Haʻapai eruption on 15 January 2022 broke the Tonga Cable to Fiji and a domestic cable. Limited satellite service began on 21 January, Digicel set up an emergency 2G network on Tongatapu, and the cable connection was restored on 22 February. The country still depends on one international cable.

Are shops open on Sundays in Tonga?

No. Tonga's constitution keeps Sunday as the Sabbath, and commerce and entertainment stop. The UK government says locals may consider recreational activity on Sundays disrespectful, though island resorts are an exception. Do your shopping and confirm Monday's plans by Saturday, as businesses and tour operators usually won't reply until Monday.

Is it legal to swim with whales in Tonga?

Only on a licensed boat with a certified guide. Humpbacks are in Tongan waters from June to November, mainly around Vavaʻu and Haʻapai. The UK government says swimming or kayaking with whales any other way can lead to a fine of up to 5,000 paʻanga, 18 months in prison, or both. Check the operator's licence before booking.

What are the emergency numbers in Tonga?

Dial 911 for ambulance, fire or police. The UK government also lists 922 for police, 933 for ambulance and 999 for fire. Your eSIM doesn't carry calls, so use your home SIM while roaming. On outer islands and at sea there may be no mobile signal, so tell your accommodation your plans.

How much data do I need for 7 days in Tonga?

For 7 days in Tonga, Viasimo sells 1 GB for $5.99 and unlimited data for $63.00. Our sizing recommendation, not a measurement: maps, messaging and the occasional lookup, about 1 GB a week; maps, social, photos and some browsing, about 3 to 7 GB a week. The data calculator on this site works it out from how you actually use your phone.

Installing, keeping your number, topping up and hotspot work the same everywhere: see how it works →

Know before you go

Tonga: what to know before you land

In Tonga your eSIM uses Digicel's 4G/LTE network, and 4G is concentrated on the main island of Tongatapu. Tonga's internet relies on a single submarine cable to Fiji. When the Hunga Tonga eruption cut it in January 2022, Tongatapu was offline for about five weeks. Also note that Sunday is a strictly observed day of rest, with commerce and entertainment shut.

Emergency: 911 922 police, 933 ambulance, 999 fire
Plugs: I 240V
Currency: Tongan paʻanga (TOP)

Main airports

TBU Fuaʻamotu International Airport, Tongatapu
VAV Vavaʻu International Airport

Apps worth having WhatsAppFacebook MessengerGoogle Maps

What the 2022 Hunga Tonga eruption did to the internet

On 15 January 2022, the underwater volcano Hunga Tonga–Hunga Haʻapai erupted, and the Tonga Cable, which links the country to the Southern Cross trans-Pacific cable in Fiji, broke in more than one place. A domestic cable to the outer islands was also damaged. A later survey found a 55 km section of the international cable missing and other sections dragged along and buried in silt.

Tonga was almost entirely offline. Limited satellite connectivity began on 21 January, and Digicel put up an emergency 2G network on Tongatapu using a satellite dish at the University of the South Pacific, handing out free SIM cards. The cable connection to Tongatapu wasn't restored until 22 February, about five weeks after the eruption, and the repair date slipped several times.

The lesson for visitors is that Tonga's connectivity depends on one cable. Normal service is fine for everyday use, but an earthquake, eruption or cyclone can cut the country off. Keep offline copies of your bookings and insurance details, and make sure someone at home knows your plans.

Tonga's Sunday Sabbath: when commerce stops

Tonga's constitution sets aside Sunday as the Sabbath, and commerce and entertainment stop. Shops, offices and most tour operators close. The UK government notes that Tongan society is conservative and religious, and that locals may see recreational activity on a Sunday as disrespectful, although this doesn't apply within island resorts.

That affects your phone use. Book your Monday activities, your airport transfer and any car hire by Saturday afternoon, while people are still replying to messages. Don't expect a Sunday reply from a tour company or guesthouse. If your flight lands on a Saturday night or a Sunday, check in advance that someone will meet you and that your accommodation will let you in.

If you're staying in a village or with a family, avoid swimming, noisy activities or work in public on Sunday. If you attend a church service, dress conservatively.

Whale-swimming rules in Vavaʻu and Haʻapai, June to November

Humpback whales come to Tonga's waters from June to November, and Vavaʻu and Haʻapai are the main centres for swimming with them. The UK government warns that swimming or kayaking with whales is illegal unless you are on a licensed boat with a certified guide. The penalty can be a fine of up to 5,000 paʻanga, up to 18 months in prison, or both.

Use your data before you book to check the operator holds a licence, and read recent reviews. Whale trips go well offshore, beyond mobile coverage, so tell your accommodation which boat you're on and when you expect to be back.

Ferries between the island groups need care. The UK government says Tonga's ferries don't follow normal safety regulations and are often overloaded, and it suggests bringing your own life jacket. Tidal currents in lagoons can be strong, and there have been fatal accidents on popular beaches. Ask locally before swimming or surfing, since many waves break straight onto the reef. Debris from the 2022 eruption may also remain in the sea and on some beaches.

Cyclones, tsunamis and calling 911 in Tonga

The UK government says Tonga's cyclone season normally runs from November to May, although cyclones can strike at any time. They bring strong winds, flooding, landslides and road closures. Tonga is also on the Pacific Ring of Fire, where earthquakes and volcanic activity can trigger tsunamis with little warning. Learn where the higher ground is near where you're staying, and move inland straight away if you feel a strong quake near the coast. Don't wait for a phone alert.

Save these numbers in your phone:

911: ambulance, fire and police
922: police
933: ambulance
999: fire

The UK government advises keeping bags with you, using hotel safes and keeping rooms locked, as petty theft is fairly common. Your eSIM is data only, so emergency calls go through your home SIM while roaming. After a big storm, mobile service may be weak, so keep a charged power bank.

Researched October 2026 · 6 sources

en.wikipedia.org 2022 Hunga Tonga–Hunga Haʻapai eruption and tsunami - Wikipedia
en.wikipedia.org Telecommunications in Tonga - Wikipedia
gov.uk Tonga travel advice: safety and security - GOV.UK
gov.uk Tonga travel advice: getting help - GOV.UK
en.wikipedia.org Fuaʻamotu International Airport - Wikipedia
en.wikipedia.org Tonga - Wikipedia

7-day itinerary

Seven days in Tonga: Tongatapu's royal and ancient sites, then the Vava'u islands

Three days on the main island of Tongatapu for Nuku'alofa, the Mu'a royal tombs, the trilithon and the blowholes, then a domestic flight north to Vava'u for sailing, sea caves and, from June to November, licensed whale swims. Plan around the Sunday Sabbath.

Length: 7 days
Bases: 2

When to go May to October is drier and cooler, and humpback whales are in Tongan waters from June to November, with August to October the busiest time in Vava'u; November to May is the cyclone season.

Day 1 Nuku'alofa

Nuku'alofa

Fua'amotu International Airport is about 30 minutes by road from Nuku'alofa.

Settle in at Nuku'alofa and walk along the waterfront to see the white wooden Royal Palace from the road, since the grounds are closed to visitors, and the nearby Royal Tombs at Mala'ekula. Browse the Talamahu Market for handicrafts, tapa cloth and produce, then walk out along Vuna Road for sunset over the lagoon. Confirm your Monday plans and any Sunday food before Saturday evening.

Signal Digicel 4G is good in Nuku'alofa and around the airport; Tongatapu is where most of Tonga's 4G is.
Day 2 Nuku'alofa

Eastern Tongatapu: Mu'a and Ha'amonga 'a Maui

Mu'a is about 20 minutes from Nuku'alofa by car; the trilithon is a further 20 minutes.

Drive east around the lagoon to Mu'a, the former royal capital, to see the langi, the stepped stone tombs of the Tu'i Tonga kings. Continue to Ha'amonga 'a Maui near Niutōua, a coral-limestone trilithon thought to date from about 1200, and walk to the coast nearby. On the way back, stop at the Anahulu cave and its freshwater pool, or the beaches along the eastern coast road.

Signal Coverage is generally good across flat Tongatapu, with weaker spots in the more rural east.
Day 3 Nuku'alofa

The western blowholes and Ha'atafu

Houma is about 25 minutes from Nuku'alofa; Ha'atafu is about 30 minutes west.

Go to the Mapu'a 'a Vaea blowholes near Houma, ideally at high tide, when waves push columns of water up through the coral terraces. Continue west to the Abel Tasman landing site at Ha'atafu and swim or snorkel at Ha'atafu beach with local advice on currents. If this is a Sunday, most things are closed and recreation in villages is frowned upon: take a boat to Pangaimotu island instead.

Signal 4G holds at the blowholes and along the western road; it can be weak right at the beach at Ha'atafu.
Day 4 Neiafu

Fly to Vava'u and Neiafu

About 1 hour by Lulutai Airlines from Fua'amotu to Vava'u; schedules are limited and weather can delay flights.

Take a domestic flight north to Vava'u (flights do not run on Sundays). In the afternoon walk around Neiafu, the main town, which sits on the sheltered Port of Refuge harbour, a favourite anchorage for yachts. Climb Mount Talau, a flat-topped hill on the edge of town, for the view over the drowned islands and channels of the group.

Signal Neiafu has mobile data, but expect slower and less consistent coverage than on Tongatapu; signal fades quickly once you leave town.
Day 5 Neiafu

Whale swimming or a sailing day

Boats leave from Neiafu harbour; whale trips last most of the day.

Between June and November, book a licensed whale-swim boat with a certified guide to look for humpback mothers and calves; swimming with whales any other way is illegal. Outside the season, join a day sail or kayak trip through the islands, landing on small beaches and snorkelling over the reefs. Tell your accommodation which boat you are on and when you expect back.

Signal There is no mobile coverage far out among the islands or beyond the reef, so treat the day as offline.
Day 6 Neiafu

Swallows Cave and Mariner's Cave

Both caves are about 30–60 minutes by boat from Neiafu.

Join a boat trip to Swallows Cave on Kapa island, a sea cave you can drive a small boat into, with clear water and swiftlets nesting overhead. Experienced swimmers can continue to Mariner's Cave on Nuapapu, which you reach only by diving a few metres under the rock into an air-filled chamber; go only with a guide and in calm seas. Stop to snorkel on a nearby reef on the way back.

Signal Little or no signal at the caves and on the water; some islands closer to Neiafu catch a weak signal.
Day 7 Nuku'alofa

Back to Tongatapu

About 1 hour by domestic flight to Fua'amotu; leave a buffer day if your international flight is tight, as domestic flights are often rescheduled.

Spend a last morning on the water or on a short walk around Neiafu's harbour, then fly back to Tongatapu to connect with your international flight. If you have time in Nuku'alofa, visit the Basilica of St Anthony of Padua, with its traditional-style interior, or watch the sunset from the waterfront.

Signal Data is usable at both airports; Tongatapu has the most reliable 4G in the country.

Staying connected on this route

Book Monday activities, transfers and car hire by Saturday afternoon; operators do not reply on Sunday, and no flights or ferries run.
Tonga relies on a single submarine cable, so save bookings and tickets offline in case the internet goes down after a storm or quake.
The whale and cave days in Vava'u are offline: send your messages before you leave Neiafu harbour.
Save 911 for ambulance, fire and police; the eSIM is data only, so use your home SIM for calls.

Itinerary sources · 4

en.wikivoyage.org Wikivoyage: Tongatapu
gov.uk GOV.UK foreign travel advice: Tonga, safety and security
en.wikipedia.org Vava'u (Wikipedia)
gov.uk GOV.UK: Tonga travel advice, getting help

Where this comes from

Information and verification

Each block below says what was checked and when. Anything we cannot date, we do not claim.

Prices and plans: Every price and allowance on this page is read from the live catalog, not typed in.; Verified October 18, 2026
Host networks: The operator list comes from the network partner that carries this eSIM.; Verified October 18, 2026