Siima in Japan - approved!
I used Siima eSIM in Japan. No problems whatsoever. The initial setup was smooth and easily understandable for a first time eSIM user. Internet speed and signal was good everywhere. Recommend.
November 4, 2026
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Company details
Written by the company
Siima sells travel eSIM data plans for more than 100 countries. Buy a plan before you fly, install it on your phone in a couple of minutes, and you're connected when you land. There's no SIM shop to find at the airport, no passport check and no roaming bill when you get back. Most recent smartphones with eSIM support work with Siima, and you can check compatibility before you buy. Plans cover popular destinations including Japan, Thailand and Turkey, so you can choose the plan for the country you're visiting. Every plan shows its data allowance, validity period and price before you pay, and the total at checkout is the total you pay. Plans don't auto-renew. When your data runs out or the plan expires, nothing is charged unless you choose to buy another one. If you haven't installed your eSIM, you can ask for a refund within 5 days of purchase. Eligible purchases also earn account credit you can use on your next plan. Siima is a service of Tafe, MB, a company registered in Lithuania, code 308026391. Our support team replies within 24 hours, seven days a week, at support@siima.online. Whether you're travelling for a weekend or a semester, we want getting connected to take minutes, not an afternoon at the airport.
Contact info
Laisvės al. 85E-5, LT-44297, Kaunas, Lithuania
- support@siima.online
- siima.online
3.7
Average
1 review
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