Product info
Honolulu eSIM plans
| Unlimited data · 5 days | $17.99 | Buy eSIM |
| Ohayu recommendsUnlimited data · 10 days | $33.99 | Buy eSIM |
| Unlimited data · 15 days | $39.99 | Buy eSIM |
| 3GB prepaid eSIM · 14 days | $8.49$2.83 / GB | Buy eSIM |
| 5GB prepaid eSIM · 30 days | $13.49$2.70 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $21.49$2.15 / GB | Buy eSIM |
| 15GB prepaid eSIM · 60 days | $27.79$1.85 / GB | Buy eSIM |
| 20GB prepaid eSIM · 90 days | $34.49$1.72 / GB | Buy eSIM |
| 50GB prepaid eSIM · 90 days | $73.49$1.47 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in United States. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Honolulu?
Waikiki week – 3 GB
Maps, beach photos, restaurant bookings.
Exploring Oahu – 10 GB
Hire car navigation round the island.
Two or three islands – 20 GB
Inter-island hops on one plan.
Longer stay – Unlimited
Tethering from a condo in Waikiki.
Coverage and network
Coverage on Oahu
United States mobile networks
Honolulu is a proper city, not a resort strip, and the network is a normal urban US one. Where Oahu differs is that you can drive from full 5G to nothing in about forty minutes, because the island runs out. (Speedtest by Ookla, June 2026)
Speedtest Global Index · Mobile · United States · June 2026
Download
197.34 Mbps
Upload
10.35 Mbps
Latency
27 ms
Global rank
#10 of 98
Honolulu and Oahu
- Waikiki and downtown: Dense coverage along the beachfront hotels, Ala Moana and the business district. Fine indoors too.
- Diamond Head and Pearl Harbor: Both covered, including the crater trail and the memorial grounds.
- H-1 and TheBus: Continuous along the main highway and on the bus network, which matters because Honolulu traffic is worse than its size suggests.
- North Shore and the windward coast: Haleiwa and the main coastal road have service. It thins on the Ko'olau ridge trails and in the valleys, and some of the remoter beaches have nothing.
Oahu, the other islands, the mainland
The plan covers all 50 states, so island-hopping to Maui or Kauai and the flight back to the mainland are all included.
How to install eSIM
Connected in 3 steps
- 01
Buy before you fly
Choose your data plan before your trip.
- 02
Download & install
Log in to your account, tap your eSIM, and follow the on-screen instructions.
- 03
Land & activate
Activate when you arrive in United States. Turn on roaming for the eSIM and it connects to a local network.
Before you buy, make sure your phone supports eSIM — see Ohayu compatible devices list or dial *#06#. It's a free request to your phone's settings. If you see the EID number — your phone is eSIM-compatible.
Arriving in Honolulu
Airport Wi-Fi at HNL
Daniel K. Inouye has free Wi-Fi across the terminals with no time cap.
Side by side
Honolulu eSIM Comparison
Indicative comparison based on publicly listed USA plans as of August 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Where to buy a SIM card in Honolulu?
Carrier stores at Ala Moana Center and along Kalakaua Avenue, plus kiosks at HNL. Prices match the mainland. An eSIM means arriving already set up.
Will I need ID at the counter for a prepaid SIM?
No - the US requires no identification for prepaid. If a clerk wants a ZIP code for the form, any valid one will do. An eSIM has no counter to visit.
Does the same plan work on Maui and the Big Island?
Yes. Hawaii is a US state, so one plan covers every island and the mainland with nothing to change when you fly between them. Coverage on the other islands follows the same pattern as Oahu: strong in the towns and along main roads, absent in the volcanic interiors and on remote coastline.
eSIM not working in Honolulu?
If you have driven up a valley or onto a ridge trail there may be no coverage. In town, check the Ohayu eSIM is your data line and roaming is on, then cycle Airplane mode. Chat and support@ohayu.com are open 24/7.
