I'll be honest: I'm not a tech savvy person, and any new device makes me slightly panic. So when I needed to go to Japan on business, I didn't even consider a physical SIM card. After some thought, I decided to get a Mobal eSIM https://www.mobal.com/japan-esims/ because it's incredibly simple. Once there, I simply turned on my phone, and the internet was instantly available. No lines, no office visits , it was done in a very human-like manner. It's awesome.