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Airalo
5 GB · 15 days
$10.50$2.10/GB
See this planAiralo vs Yesim for Japan (2026)
Airalo and Yesim are both popular for Japan, but they are not built the same way. Here is a face-to-face comparison on published prices and features, with a verdict per type of traveler.
Updated September 24, 2026Prices checked September 24, 2026
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At a glance
Airalo
Unlimited · 10 days
$34.50
See this planAiralo
5 GB · 15 days
$10.50$2.10/GB
See this planHead to head
| Airalo | Yesim | |
|---|---|---|
| Plan for this page | 5 GB · 15 days · $10.50 | 5 GB · 30 days · $10.56 |
| Price/GB | $2.10/GB | $2.11/GB |
| Score | 9.3/10 | 9.3/10 |
| Networks | SoftBank, KDDI | KDDI |
| 5G | Yes | Yes |
| Hotspot | Not stated | Yes |
| Unlimited | Yes | Yes |
| Top-up | Yes | Not stated |
| Phone number | No | No |
| plans | 17 | 35 |
Our verdict by traveler type
Choose Airalo if…
Choose Airalo if its price for your trip length is lower: compare the plan shown for each profile.
- Solo Travelers
- Business Travel
- Students & Working Holiday
- JR Pass Road Trips
Choose Yesim if…
Choose Yesim if you need to share your connection with another device.
- Families
- Digital Nomads
Plans compared for this trip
Plan shown: the cheapest plan of each provider that covers at least 10 days and 5 GB. Tap a column header to sort.
What matters here
Airalo sells fixed and unlimited plans for Japan, while Yesim sells fixed and unlimited plans for Japan. That difference drives most of the verdict below.
On networks, Airalo publishes SoftBank and KDDI and Yesim KDDI. On hotspot, Airalo does not state its policy and Yesim allows sharing.
The per-profile verdict is computed with the same score as the rest of the site, using each profile’s trip length and data need: that is why one provider can win for a family and lose for a solo traveler.
Prices move often. The table shows the plan each provider sells for the need of this page, at the price published on the date shown at the top.
Once the eSIM is active, turn off data roaming on your home SIM so your usual carrier does not bill background data.
Guides on this site
How much data do you need?
Pick your trip length and how you use your phone. The assumptions are visible and editable.
Install your eSIM in 4 steps
- 1
Buy the plan before you leave and keep the QR code or the app handy.
- 2
Install the eSIM at home on Wi-Fi. Most plans only start the validity period once the eSIM connects in Japan.
- 3
On landing, switch the eSIM on for mobile data and keep your home SIM for calls and texts if you need them.
- 4
Turn on data roaming for the eSIM line, then check that the phone shows a Japanese network.
Your phone must be carrier-unlocked and eSIM-compatible. Check this in your phone settings before you buy.
Frequently asked questions
Which is cheaper for Japan, Airalo or Yesim?
For 10 days with at least 5 GB, Airalo costs $10.50 and Yesim costs $10.56, with prices checked on September 24, 2026.
Which is better for Japan, Airalo or Yesim?
On our score Airalo comes ahead of Yesim for a typical trip. The verdict by traveler type shows where the other one wins.
Do Airalo and Yesim use the same network in Japan?
Airalo publishes SoftBank and KDDI; Yesim publishes KDDI.
Can I switch from Airalo to Yesim during my trip?
Yes. Most phones store several eSIMs; install the second one on Wi-Fi and select it as your data line. Only one line can usually carry data at a time.
Can I set up the eSIM before leaving home?
Yes, and it is the easiest option: scan the QR code or use the provider’s app on Wi-Fi before departure. Most plans only start counting days when the eSIM first connects in Japan.
Top pickAiralo · $10.50See this plan