AT&T roaming in Japan or a travel eSIM?
Travelling from the US to Japan? Here is what AT&T's International Day Pass costs for your trip, next to today's cheapest travel eSIMs. AT&T prices are from AT&T's own website (checked 11 October 2026); eSIM prices are checked every day.
eSIM prices checked 14 November 2026 · Virgin Connect Roam prices checked 10 November 2026
For 7 days with social media, browsing, photo uploads and some video calls (about 5.6 GB), the cheapest travel eSIM costs $4.99 with shibaSIM, against $84.00 with AT&T. That is about $79.01 less.
Trip by trip
| Trip | AT&T International Day Pass | Cheapest travel eSIM | Cheapest unlimited eSIM | eSIM vs AT&T |
|---|---|---|---|---|
| 3 days Social media, about 2.4 GB | $36.00 3 × $12.00 a day | $3.31 Roam2Go: 3 GB plan, valid 3 days | $3.39 shibaSIM · Full speed 1 GB a day, then 256 kbps | $32.69 less |
| 7 days Social media, about 5.6 GB | $84.00 7 × $12.00 a day | $4.99 shibaSIM: Unlimited data, 7-day pass | $4.99 shibaSIM · Full speed 1 GB a day, then 256 kbps | $79.01 less |
| 14 days Social media, about 11.2 GB | $168.00 14 × $12.00 a day | $8.09 shibaSIM: Unlimited data, 15-day pass | $8.09 shibaSIM · Full speed 1 GB a day, then 256 kbps | $159.91 less |
| 14 days Streaming video, about 28 GB | $168.00 14 × $12.00 a day | $13.09 shibaSIM: Unlimited data, 15-day pass | $13.09 shibaSIM · Full speed 1 GB a day, then 256 kbps | $154.91 less |
Each eSIM price is the cheapest way to cover the whole trip with enough data. Tap a price to open the plan.
What AT&T says
Unlimited talk, text and data from your US plan for $12 a day (24 hours); $6 a day for each extra line used the same day.
- Only available when added to an AT&T unlimited plan.
- Data comes from your US plan's allowance; AT&T says terms, fees and restrictions apply.
Source: AT&T: International Day Pass · AT&T: more details (checked 11 October 2026). Carrier prices change; your bill follows AT&T's current terms.
How to use an eSIM and keep your AT&T number
- Check that your phone supports eSIM and is not locked to AT&T.
- Buy a plan for Japan and install it over Wi-Fi a day before you fly.
- When you land, choose the eSIM for mobile data and turn on data roaming for the eSIM only.
- Keep your AT&T line on for calls and SMS codes, with its data roaming turned off.
More: all eSIM plans for Japan.
Questions
Is a travel eSIM cheaper than AT&T roaming in Japan?
For a 7-day trip with about 5.6 GB, AT&T International Day Pass costs $84.00 and the cheapest travel eSIM costs about $4.99 (shibaSIM, prices checked 14 November 2026). That is about $79.01 less with the eSIM.
Can I keep my AT&T number while using an eSIM?
Yes, on a phone with two SIMs. Keep your AT&T line switched on for calls and SMS codes, set the eSIM as your mobile data line, and turn off data roaming on the AT&T line so you are not charged for data.
How much does AT&T roaming cost in Japan?
Unlimited talk, text and data from your US plan for $12 a day (24 hours); $6 a day for each extra line used the same day. (from AT&T's website, checked 11 October 2026).
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