Can this shop handle my plan?
Choose your carrier, plan and procedure to see the usual support route. Store handling can differ, so confirm with the shop before visiting.
In Japan, "you can sign up for this plan" and "this shop supports this plan" are two different things. A carrier shop may not handle an online-focused plan at all, may only help you do it yourself online for a fee, or may handle it fully at the counter — and it depends on the carrier, the plan and the procedure.
Pick your carrier, plan and the procedure you need below. The result is sample data to show how availability differs; always confirm with the shop before you go.
Information guide — verify the linked official terms before applying.