Good coverage all over Japan, only 3G which is a bit slow for the price but still a good product!

It was a really affordable way to have data everywhere on our trip. Even on hikes I was able to search directions and translate. Definitely worth getting.

I found this product very useful for my 30-day stay in Japan. The connection is fast and works pretty much everywhere

We did not face any issue.

I had the SIM Data Card (30 days) with LTE speed.
I picked up my card at Haneda Airport.
Even with the description it was a little bit tricky to find the counter, but I made it with a bit of help :)
Easy installation, worked right of the bat (Samsung S8).
Had connection everywhere (had been in Prefektures Tokyo, Nagano and Chiba).
I had a 500 MB/day flatrate, still from the third week on the internet speed was pretty poor for an LTE connection (therefore the one star deduction)
I would use it again!

Convenient

Excellent service and quality!

Totally recommended!

Service was hassle free and was indispensable to my visit to Japan.

Family of four - full WiFi everywhere for everyone. Perfect.