Use povo data-only for arrival internet, not for SMS or a Japanese phone number.

The no-ID route is useful, but it is not a phone line

The most common mistake is reading no identity documents as no setup friction. povo data-only removes one gate, but the official page still lists several practical gates that matter before you land.

• It is eSIM-only, so your phone needs eSIM support and should be unlocked or otherwise ready for the au network.
• It requires an initial topping purchase at contract time, and the line can be suspended or cancelled after a long period with no paid topping.
• It cannot make or receive normal calls, cannot send or receive carrier SMS, cannot use MNP, and is for Japan domestic use only.

Choose by the job the line must solve

Start from the first real task, not from the plan name. If the task is internet access, data-only can be enough. If the task is proof, calls, or account recovery, it is the wrong tool.

• Choose data-only or a visitor Japan SIM when you need maps, translation, train apps, QR tickets, app messaging, hotspot use, and hotel apps.
• Choose calls + data when a Japanese mobile number, carrier SMS, local calls, MNP, banking, housing, school, work, delivery, or 2FA is part of the setup.
• If you are not sure, keep your home-country line active until you know which Japanese services will ask for SMS or a local phone number.

What the current official povo pages show

The official top page separates calls + data from data-only and warns users not to choose the wrong application type. The data-only explanation page is more specific: it says the route opens without identity documents, uses eSIM, needs a separate SMS-capable voice line, and cannot use calls, SMS, or MNP.

• For setup, the SIM/eSIM procedure page tells users to check device support and explains that eSIM is a downloaded profile, while SIM cards are physical cards.
• Some iPhone/iPad and Android setup paths can involve OS, APN, or profile checks, so keep Wi-Fi or another data line available during activation.
• Data-only can be a useful bridge, but it should not hold the phone number for your bank, school, employer, delivery accounts, or long-term recovery codes.

The fresh visitor signal is Japan SIM for MyJapan+

This topic is current because povo also announced a new visitor-focused eSIM route on 2026-06-25: Japan SIM for MyJapan+ through JCB's inbound travel app. The official release calls it a data-only eSIM for international visitors to Japan and says it can be applied for online from overseas.

• That launch reinforces the product split: visitor products are built for internet access, not resident phone-number duties.
• The release lists four unlimited-data options with launch promotional pricing through 2026-09-30, but those are visitor data products, not calls + SMS lines.
• Use visitor data when it fits the trip; use resident calls + data when the phone number itself is the service you need.

A safer order before applying

Use this sequence before pressing the application button. It keeps a convenient no-ID claim from pushing you into the wrong line.

• First, list the tasks you need in the first 30 days: internet only, or phone number and SMS too.
• Second, check device unlock, eSIM support, setup Wi-Fi, another SMS-capable line, payment, and topping size before choosing data-only.
• Third, if you need a Japanese number, compare calls + data plans on the plans page, use the FAQ for setup checks, and only use referral links after the official route still matches your situation.