Product info
Osaka eSIM plans
| 3GB prepaid eSIM · 15 days | $7.49$2.50 / GB | Buy eSIM |
| Ohayu recommends5GB prepaid eSIM · 30 days | $10.49$2.10 / GB | Buy eSIM |
| 10GB prepaid eSIM · 30 days | $16.49$1.65 / GB | Buy eSIM |
| 20GB prepaid eSIM · 30 days | $22.99$1.15 / GB | Buy eSIM |
| 50GB prepaid eSIM · 30 days | $53.99$1.08 / GB | Buy eSIM |
You can install your eSIM before the trip and activate it when you arrive in Japan. Validity starts after eSIM activation.
Plan details
How much mobile data you need
What's the best eSIM for Osaka?
Osaka weekend – 3 GB
Enough for transit apps, Dotonbori navigation, and social media.
One to two weeks – 5 GB
Maps, translation and social posts. Day trips to Kyoto and Nara included.
Osaka + Kyoto + Tokyo – 20 GB
The full Shinkansen circuit. One plan, Kansai to Hokkaido.
Remote work – 50 GB
Hotspot for your laptop, video calls from cafes in Namba or Umeda.
Coverage and network
Honest about coverage
Japan mobile networks
Japan ranks 68th globally for mobile download speed at 68 Mbps. Osaka is 113 Mbps download (rank 83 among cities), ahead of London (107 Mbps) and comparable to Rome (124 Mbps). (Speedtest by Ookla, June 2026)
Speedtest Global Index · Mobile · Osaka · June 2026
Download
112.84 Mbps
Upload
14.7 Mbps
Latency
31 ms
Global rank
#83 of 98
Real Osaka conditions
- Underground stations & tunnels: Osaka Metro tunnels have reasonable coverage on most lines, though signal can weaken in deeper sections between Tanimachi and Yotsubashi line stations. Platforms are generally well covered.
- Dotonbori & busy areas: During major events and peak tourist season, network load around Dotonbori and Kuromon Market can cause temporary slowdowns. Off-peak hours - early morning or late evening - typically give the best speeds in these dense areas.
- Outskirts and industrial zones: Coverage is consistent across central Osaka, but some industrial districts near the port and outer suburban areas may see reduced speeds compared to the city core. All major tourist and commercial areas are reliably covered.
One eSIM, all of Japan
The same plan that keeps you online in Osaka works across all of Japan. Day trips to Kyoto, Nara, or Kobe - or an onward journey to Tokyo - are all covered without any additional setup.
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 Japan. 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 Osaka
Free Wi-Fi in Osaka
Skipped the install at home? Kansai Airport has free Wi-Fi in both terminals.
Side by side
Osaka eSIM Comparison
Indicative comparison based on publicly listed Japan plans as of May 6th, 2026. Competitor pricing and policies change - check their sites for current terms.
Frequently asked questions
Where to buy a SIM card in Osaka?
At Kansai International (KIX), Sakura Mobile is in the T1 arrivals lobby (open 06:00-23:00), and SoftBank and BIC Camera are nearby. SIM vending machines also run 24/7. Passport required, and all tourist SIMs are data-only. Itami (ITM) is domestic only - no SIM counter there at all. If you're arriving into ITM or just want to get online as soon as you land, a travel eSIM like Ohayu can connect you to supported networks like NTT Docomo or SoftBank.
What ID does a Japanese SIM need?
Japanese carriers verify identity for a local line, and tourist products are sold as fixed-term data SIMs rather than open contracts. A data-only travel eSIM is bought online with no verification step - Ohayu issues no Japanese number, so there is nothing to check.
Why isn't my eSIM working in Osaka?
In the subway's longer tunnel sections you may lose it briefly. Beyond that, confirm your phone is drawing data from the Ohayu line with roaming switched on, then toggle Airplane mode. If it stays offline, chat and support@ohayu.com are open 24/7.
