How to Set Up an eSIM in Japan (2025): Step-by-Step Guide Quick guide: Buy your Japan eSIM online, scan the QR code, and activate mobile data in minutes. No physical SIM, no pickup — perfect for travelers landing at Haneda or Narita. Tip: Get your plan before arrival → Get a Japan eSIM Works instantly at the airport or hotel Wi-Fi This article contains affiliate links. 1. Before You Arrive Choose a provider: Airalo, Ubigi, or Nomad are reliable for Japan. Check compatibility: iPhone XR/XS and newer, most Android models (Pixel, Galaxy, etc.) support eSIM. Wi-Fi needed: Activation requires a ...