This article is for those who are planning to visit Japan from abroad. Me, as a Japanese, living in Japan, I have no need to purchase such roaming eSIM for Japan, but just curious for that.
- It took 2 hours and a half to get a voucher.
- It starts counting when you activate it, it is not up to the date when you select to purchase.
- It is not 24 hours that the date counting. It is Taiwanese date.
- There are notifications by SMS.
It was Friday night when I purchased, and it was Saturday when the earliest day to be able to select.
I installed it with saying it is an eSIM by 中華電信=Chunghwa Telecom in Taiwan.
It took 40 mins to get 4G. Leave it to wait to catch 4G network.
It catches both NTT Docomo and KDDI (au) network.
I have regularly using 3 mobile networks that NTT Docomo (authentic), NTT Docomo (MVNO), and KDDI (second line, it is an authentic, but they are selling as if they were MVNO).
I think it is pretty enough. “au” means KDDI, by the way.
Also I need to note that this eSIM allows tethering (personal hotspot).
Please remember that it has no access of SMS and calling.
Do you remember that I activate it at Friday night, it was one day plan. In Saturday morning, I found it was turned to 3G. I checked the sales page.
Once you activate the eSIM, the time starts counting. The usage day resets at every midnight, Taiwan time (GMT+8) and is not based on a 24-hour system.
There are no notifications from Chunghwa. When you feel anxious about no notifications, probably this eSIM is not for you. dtac eSIM is better for you. See also: dtac eSIM.