Originally Posted by
MSPeconomist
BTW, be aware that many foreign cell phones do not work in Japan, although I think HND might give free wifi in the airport. Check this if part of the plan is to contact each other upon arrival and be sure to have a fallback place to meet as well as contingency plans if one flight is delayed or even cancelled.
That’s a bit of a concern thanks for flagging. Which cell phones / countries are impacted? My wife and I both have recent IPhones with mobile plans from Germany and Switzerland. I never had issues using my phone anywhere in the world so far.