The short answer
The best eSIM for Kauaʻi, United States is the one that fits your trip and your networks. For two weeks of photos, maps and social, NUM picks 5 GB for 30 days at $5.39, as of 3 Nov 2026.
| Plans from | $0.99 on 3 Nov 2026 |
|---|---|
| Networks on local plans | Verizon, AT&T |
| A week | 3 GB, 15 days, $4.19 |
| Two weeks | 5 GB, 30 days, $5.39 |
| A month | 10 GB, 30 days, $8.29 |
| Longer | 20 GB, 90 days, $16.89 |
| Phone number | None, data only |
| Payment | Apple Pay, Google Pay or card |
Coverage in United States: what to know
Ookla's January-July 2025 study of 42 busy national parks found T-Mobile faster than Verizon and AT&T in six of the ten most popular parks, with wide variation by park. Death Valley had the slowest median download, so plan offline maps there.
Checked 3 Nov 2026. Source: benton.org. Coverage changes, so check your route before you rely on it.
Which eSIM for your Kauaʻi trip
- A week$4.193 GB · 15 days
- Two weeks$5.395 GB · 30 days
- A month$8.2910 GB · 30 days
- Longer$16.8920 GB · 90 days
The shop’s pick for each trip length on 3 Nov 2026, for photos, maps and social. Prices in US dollars; the shop always shows today’s price.
United States data plans that work in Kauaʻi
| Data | Valid for | Network | Price |
|---|---|---|---|
| 500 MB | 7 days | Verizon 5G | $0.99 |
| 1 GB | 7 days | Verizon 5G | $1.59 |
| 2 GB | 15 days | Verizon 5G | $4.09 |
| 3 GB | 15 days | Verizon 5G | $4.19 |
| 3 GB | 30 days | Verizon 5G | $4.29 |
| 5 GB | 30 days | Verizon 5G | $5.39 |
15 United States plans in the shop on 3 Nov 2026. See every plan and today’s prices or read the United States eSIM guide.
Across Kauaʻi
The same plan covers you in Kauai, Lihue, Kapaa, Poipu, Koloa, Princeville and Hanalei, and on the way between them.
Planning Kauaʻi
Questions people ask about a Kauaʻi eSIM
Does a United States eSIM work in Kauaʻi?
Yes. A United States eSIM runs on the United States’ own networks (Verizon, AT&T), so the same plan works in Kauaʻi and everywhere else those networks reach in the country. There is no separate Kauaʻi plan to buy.
How much does an eSIM for Kauaʻi cost?
On 3 Nov 2026, United States plans started at $0.99 and went up to $80.79 for the biggest. The shop always shows today’s price, and the price on the pay button is the price you pay.
How much data do I need for Kauaʻi?
For a week of maps, rides, messages and photos most people use about 3 GB; for two weeks about 5 GB; for a month of social and video, 10 GB or more.
Why does my eSIM show another carrier’s name?
Many travel eSIMs are issued by one carrier and roam on local networks, so your phone can show the issuing carrier’s name while your data runs on a local network. Keep data roaming on for the eSIM.
Will it work on my phone?
Dial *#06# on the phone you’re taking. If you see an EID number, it takes an eSIM. Every iPhone from the XR and XS on does, and the SE from 2020, as do Google Pixel 3 and later and Samsung Galaxy S20 and later. The phone must be carrier-unlocked. Not sure? Text PHONE and your model and we’ll check.
When do I install it?
At home, on wifi, before you fly. Then switch it on when you land. Tell us your landing day and we text you the switch-on steps that morning.
Does it come with a phone number?
No. It’s a data-only eSIM. WhatsApp, LINE, iMessage and FaceTime all work over it, and your home number can stay on for calls and codes.
What if it doesn’t work?
If we can’t issue your eSIM, we refund you in full. If it won’t install or connect, text us and we help you get connected.
An eSIM with a Kauaʻi concierge inside.
Text NUM a table for tonight, a driver at 6 am or a pharmacy that’s open now in Kauaʻi. Any language, any hour, on the data you just bought.
Get my Kauaʻi eSIM