30-day prices next to Armenia's
Yesim plans as of 22.10.2026:
| Data | Japan | Armenia |
|---|---|---|
| 1 GB | $4.44 | $3.00 |
| 3 GB | none | $7.80 |
| 5 GB | $10.56 | $11.52 |
| 10 GB | $19.20 | $19.20 |
| 20 GB | $29.76 | $26.40 |
| 30 GB | $39.60 | $33.60 |
5 GB for Japan is $0.96 cheaper than in Armenia, and 10 GB costs the same. The small and large plans cost more: 1 GB by $1.44, 30 GB by $6.
eSIM for Japan from Yesim
Buy the eSIM no earlier than 90 days before the trip, install it by QR code and connect once you are in Japan.
Go to YesimAdvertisement. Advertiser: Genesis Group AG. TIN CHE-135.623.633 MWST. erid: 2VtzqvZbafw
When to buy
You must activate a Japan eSIM within 90 days of purchase, not 180 as with Armenia. If you booked flights six months out, hold off on the eSIM. The 30-day period starts when you connect.
On top-ups, Yesim's Japan page contradicts itself: the table says unavailable, while the top-up block says it happens automatically with an active subscription. It is safer to assume you cannot add data and buy with headroom.
Which plan for your trip
A few days
1 GB costs $4.44. The site calculator also lists a 1-day plan for $4.20 without stating the data amount, so check its terms.
One or two weeks
5 GB for $10.56 is the best deal relative to Armenia; 10 GB for $19.20 if you use a lot of video.
Working from a laptop
Hotspot is available. For a month of tethering, look at 20 or 30 GB.
Also worth knowing
- Data only: no calls, no SMS, no Japanese number.
- Speed may be limited under the operator's fair usage policy.
- No ID check, and one QR code installs on one phone. Dial *#06# to check eSIM support: the reply should include an EID line.
- yesim.app accepts Visa, Mastercard, Apple Pay, Google Pay, PayPal and UnionPay. Promo code travelpayouts24 gives new users 3 EUR off, under the affiliate programme terms.
The main thing is the home
A WSE.AM agent will send apartments for your budget and district via Telegram or WhatsApp and group viewings into one or two days.
Find an apartment in 4 questionsFAQ
How much is an eSIM for Japan?
As of 22.10.2026 Yesim 30-day plans cost from $4.44 for 1 GB to $39.60 for 30 GB.
How early should I buy?
No earlier than 90 days ahead: that is the activation window.
Is it pricier than in Armenia?
1, 20 and 30 GB cost more, 10 GB is the same, and 5 GB is $0.96 cheaper.
Can I top up?
Yesim's page gives conflicting information, so buy with headroom.
eSIM for Japan from Yesim
Buy the eSIM no earlier than 90 days before the trip, install it by QR code and connect once you are in Japan.
Go to YesimAdvertisement. Advertiser: Genesis Group AG. TIN CHE-135.623.633 MWST. erid: 2VtzqvZbafw
Related
Data as of 22 October 2026. Prices and terms are set by the service; check them when booking.