I purchased an eSIM from trifa for occasional short-term use abroad and used it in Turkey and mainland China. In both cases, the connection speed was good and there were no problems with disconnections after the connection was opened. I think you can find out which carrier's eSIM you are using before you buy, so if you are concerned about the speed, you can check the reputation of the eSIM in advance. I have never used their support before, but I think it is reassuring to know that I can get chat support in Japanese if I ever need it. The application carefully explains the eSIM installation and activation procedures, and also provides step-by-step instructions like a to-do list, so it is easy to set up even if it is your first time. It is also easy to purchase additional eSIMs when the amount of data you have purchased runs low, and Apple Pay can be used for payment, so I think it is good that the decision-making process is simple. I used to compare several overseas eSIM companies and sign up for the cheapest one, but recently I have been choosing trifa because the usage is the same and it can be used in Japanese. As for future expectations for the application, I think it would be convenient to receive a notification when the communication volume has decreased, although I can check the consumption status on the application. Also, it would be convenient to have smaller and cheaper plans for short periods of time, such as transferring between airports, and plans with unlimited capacity for a variety of uses. I am planning to use the eSIM for my next family trip, and I think it would be useful to be able to send the eSIM I purchased as a gift to my friends and acquaintances who accompanied me.