I've typically rented a local SIM card internationally but the concept of a portable wifi router (i.e. hotspot), which supports 10 devices, is elegant! The device was also conveniently pre-delivered to my hotel on the day of of my arrival. I'm taking one star away, though, the battery for the device Ninja WiFi supplied me depleted within a few hours and I had to go out of my way and make a special trip to their office in Shinjuku to get a replacement. Ninja WiFi should run every device through a load test to be absolutely certain there is sufficient capacity.

WiFi was delivered to our hotel , collected it on arrival . Worked great for the whole ten days . The battery probably lasted about twelve hours . With two phones using the WiFi . Just occasionally needed to take a power bank if we planned to be out for a long day.

The whole process went as advertised. The device was handed to us when we checked into our hotel. Drop off at the airport was easy—the provided instructions made this very clear. Having internet access in Japan is essential, and this kept us connected everywhere we went. Make sure you bring an external charger, as the battery life didn’t last a full day. But otherwise no complaints.