PSA: the "GO" app (prev.…
PSA: the "GO" app (prev. JapanTaxi) finally added support last November for account registration with foreign phone numbers, which they'd previously been using to gate the service to Japanese residents.
Strongly recommend using GO over Uber for taxi dispatch in Japan—far better coverage and availability goinc.jp/news/pr/2023/11/10/4zow9wentngt9gjmlsebyn/