Osaka - Post Report Question and Answers
Do you have any recommendations regarding mobile phones? Did you keep your home-country plan or use a local provider?
Softbank is good. No problems with mobile phones here. - May 2021
Personal phones require a Japanese ID with your address, so most wait until they receive their driver's license to get a personal phone. Cells are issued by the consulate upon arrival. - Jul 2018
The Consulate issues our phones. - Aug 2006