Table of Contents1. Products Sold at the GTN Haneda APG StorePrepaid data-only SIM cards, eSIMs, SIM cards with voice calls that offer 10 minutes of free calls and unlimited calling options that can be used in Japan are just a few of the GTN Mobile products available at the GTN Haneda Airport Garden Store. GTN Mobile is a great choice for anyone traveling to Japan for a brief stay or for business. All you need to bring is your passport to buy a SIM card without any hassle. *If you wish to purchase a plan that includes voice calls, you will need to provide two pieces of documentation: your pass…