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Yesim
5 GB · 30 days
$10.56$2.11/GB
See this planYesim vs Holafly for Japan (2026)
Choosing between Yesim and Holafly? For 10 days with at least 5 GB, Yesim costs $10.56 and Holafly $36.50. The rest depends on how you use your data.
Updated September 24, 2026Prices checked September 24, 2026
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At a glance
Yesim
Unlimited · 10 days
$34.57
See this planYesim
5 GB · 30 days
$10.56$2.11/GB
See this planHead to head
| Yesim | Holafly | |
|---|---|---|
| Plan for this page | 5 GB · 30 days · $10.56 | Unlimited · 10 days · $36.50 |
| Price/GB | $2.11/GB | — |
| Score | 9.4/10 | 6.2/10 |
| Networks | KDDI | KDDI, SoftBank |
| 5G | Yes | Yes |
| Hotspot | Yes | Yes |
| Unlimited | Yes | Yes |
| Top-up | Not stated | Not stated |
| Phone number | No | No |
| plans | 35 | 6 |
Our verdict by traveler type
Choose Yesim if…
Choose Yesim if its price for your trip length is lower: compare the plan shown for each profile.
- Families
- Solo Travelers
- Business Travel
- Students & Working Holiday
- JR Pass Road Trips
- Digital Nomads
Choose Holafly if…
Choose Holafly if you want unlimited data without comparing volumes, and accept a higher price than a fixed plan.
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
Yesim sells fixed and unlimited plans for Japan, while Holafly only sells unlimited plans for Japan. That difference drives most of the verdict below.
On networks, Yesim publishes KDDI and Holafly KDDI and SoftBank. On hotspot, Yesim allows sharing and Holafly 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, Yesim or Holafly?
For 10 days with at least 5 GB, Yesim costs $10.56 and Holafly costs $36.50, with prices checked on September 24, 2026.
Which is better for Japan, Yesim or Holafly?
On our score Yesim comes ahead of Holafly for a typical trip. The verdict by traveler type shows where the other one wins.
Do Yesim and Holafly use the same network in Japan?
Yesim publishes KDDI; Holafly publishes KDDI and SoftBank.
Can I switch from Yesim to Holafly 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.
How do I activate the eSIM when I arrive?
Select the eSIM as your mobile data line, turn on data roaming for it, and wait for a Japanese network name to appear. If nothing happens, restart the phone and check the APN settings shown by the provider.
Top pickYesim · $10.56See this plan