A Tofua Mobile travel eSIM for Tonga starts at $4.50 for 1 GB over 7 days. The product page lists the speed as 5G. Plans run from 7 to 30 days, and unlimited plans are listed separately from $27.50 for 3 days. Coverage is Tonga.
Key facts
| Country | Tonga |
| Network | Tofua Mobile |
| Speed | 5G (published on the product page; subject to carrier Fair Usage Policy) |
| From | $4.50 for 1 GB / 7 days |
| Validity | 7, 15, or 30 days |
| Install | QR code, before you fly |
What a Tofua Mobile eSIM costs
The cheapest published plan on the Tonga travel eSIM is $4.50 for 1 GB valid 7 days. A 2 GB / 15 day plan is $9.00, a 3 GB / 30 day plan is $13.00, a 5 GB / 30 day plan is $19.00, and 10 GB over 30 days is $34.00. There is no 30 day unlimited plan on this product. The 3 GB / 30 day plan is the value pick: a full month for $8.50 more than the 7 day plan and three times the data. Above that, the 5 GB plan works out at $3.80 per gigabyte and the 10 GB plan at $3.40.
Network
The plan is sold under the operator name Tofua Mobile and the supported country is Tonga. The product page publishes the speed as 5G, and real speed still depends on the mast, the handset, and the carrier Fair Usage Policy. Tonga is a Polynesian kingdom of more than 170 islands, and the coverage story follows the three inhabited groups rather than the map: Tongatapu in the south, where Nuku’alofa and the international airport are, Vava’u in the north, and the Ha’apai group in between. The main islands are covered, and inter-island travel is by small aircraft or ferry, so the practical framing is that you are on one network footprint across a very large stretch of ocean. It does not cover Fiji, Samoa, or New Zealand, so a Pacific island-hopping route needs more than one plan.
How much data you actually need
Maps, chat, and ferry or flight confirmations sit inside 1 GB for a short stay, and guesthouse Wi-Fi is common on Tongatapu and in Neiafu on Vava’u. The outer islands and any time on the water are where the allowance goes, because there is no Wi-Fi to fall back on. A two-week trip across Tongatapu, Ha’apai and Vava’u with daily photo uploads is realistically 3 GB to 5 GB, and 10 GB covers a month. Download offline maps and your booking details before you leave Nuku’alofa.
Unlimited data
Unlimited plans are listed on the same product page, from $27.50 for 3 days, $41.50 for 5 days, $53.00 for 7 days, $69.00 for 10 days and $95.00 for 15 days, with no 30 day option. Unlimited is priced very high on this product, so the comparison is not close: 3 days of unlimited costs $27.50, which is more than 5 GB over 30 days at $19.00, and the 10 GB bucket at $34.00 lasts a month for a similar outlay. Buy unlimited only for a short trip with constant uploads.
Dual SIM
Keep your home SIM for calls and bank texts. Turn on data roaming only for the Tofua Mobile line. iPhone: Settings, Mobile Data, pick the travel line. Android: Settings, Network, SIMs, set mobile data to the travel eSIM. Do this before you leave the airport Wi-Fi.
Arrival and transit
Almost every visitor lands at Fua’amotu International (TBU) near Nuku’alofa on Tongatapu, with domestic hops to Vava’u (VAV) and Ha’apai (HPA) and ferries between the groups. Install the eSIM on hotel or home Wi-Fi before the flight, then switch the data line on after you clear arrivals. You do not need a local shop or a passport photo for this plan.
Install
- Buy the plan and open the QR code in the order email while you still have Wi-Fi.
- On the phone, add an eSIM and scan that code. Label the line “Tonga”.
- After landing, set mobile data to that line and leave your home number on for texts.
Phone compatibility
The phone must be carrier-unlocked and eSIM-capable. iPhone XS and later, and recent Samsung Galaxy and Google Pixel models, qualify. A locked handset will not take the QR code. Check the lock status with your home carrier before you pay.
FAQ
Q1: How much is the cheapest Tonga eSIM?
$4.50 for 1 GB, valid 7 days, on the Tofua Mobile plan.
Q2: Which operator is on the plan?
Tofua Mobile. The supported country is Tonga.
Q3: Does it include calls and SMS?
No. It is a data plan, with voice calls only through apps such as WhatsApp or FaceTime. Keep your home SIM for calls and one-time passwords.
Q4: Is it 5G?
Yes. The product page lists the speed as 5G. Real speed still depends on coverage and the Fair Usage Policy.
Q5: Can I install it after I land?
Yes, if you can reach Wi-Fi. Installing before the flight is simpler, because the QR download needs a connection.
Q6: Will it work outside Tonga?
No. Fiji, Samoa, and New Zealand each need their own plan.
Q7: Is there an unlimited option?
Yes, but expensive: from $27.50 for 3 days, and there is no 30 day unlimited plan. The 10 GB / 30 day bucket at $34.00 is usually the better buy.
Q8: Can I share it as a hotspot?
Yes, within the data allowance. Hotspot traffic counts against the same gigabytes, and heavy sharing can hit the Fair Usage Policy.
Q9: What if the QR code fails?
Use the manual activation code in the same email. The phone still has to be unlocked.
Q10: When were these prices checked?
October 2026, against the published variation prices on travelydata.com.
Bottom line
For a week on Tongatapu, the $4.50 / 1 GB Tofua Mobile plan is enough if you use guesthouse Wi-Fi, and the 3 GB / 30 day plan at $13.00 is the one to buy for an inter-island trip. Add Ha’apai or Vava’u and 5 GB at $19.00 or 10 GB at $34.00 is the sensible step. The published speed is 5G, and unlimited is priced high enough that the buckets win at every length.
Prices and coverage verified on travelydata.com, October 2026.
