I bought a 1GB - 7 days esim for my trip to Japan from their website. The QR code to install the Esim arrived by email a few minutes after I ordered. I installed the esim on my mobile in Australia before I left for Tokyo and when I arrived my phone showed that I had a data connection with Docomo. The connection never dropped out during my 5 day vacation in Japan and the speed was faster than what I was getting with my Australian carrier