How much mobile data (GB) should I budget for a week in Tokyo?

For a typical 7-day deep dive into Tokyo's vibrant districts like Shibuya, Akihabara, and even a day trip to Hakone, 10-15 GB of data is usually a comfortable amount. This covers essential navigation using Google Maps, translating Japanese phrases, sharing your urban discoveries on social media, and light streaming. If your adventure involves extensive video calls back home, using your phone as a hotspot for other devices, or heavy streaming of Japanese media, consider a 20+ GB plan to ensure uninterrupted connectivity throughout your entire journey.