Short answer
Use your home carrier's international roaming in Japan when that carrier's own page says the plan or pass covers the calls, texts, or data you want, and use a travel eSIM when you want a separate data plan. Verizon, AT&T, T-Mobile, Rogers, TELUS, and Telstra publish the roaming terms below, and the Japan plan page shows the data amount and validity of a Wakamo plan.
Keeping your home number on a second line, and what Apple and Google say about roaming fees, is covered in Can I keep my home number and use dual SIM in Japan?.
Fact table
As of 2026-10-21
Each claim names its source. The full source list, with the date each page was read, is below.
| Claim | Source |
|---|---|
| Verizon lists Japan as a TravelPass country. That page says the wireless plan travels with unlimited data, talk, and text in 210+ countries and destinations. | Verizon, TravelPass countries |
| Verizon says TravelPass includes unlimited calls, unlimited texts, and unlimited data, and that after 5GB of high-speed data, data continues at the slower speed that page states for the rest of the session. A qualifying plan and a world device are required. TravelPass is added automatically on Unlimited Plus and Unlimited Welcome. | Verizon, TravelPass |
| Verizon says a 24-hour TravelPass session starts when the device is used in a TravelPass country, including a call, a text, or data. Cellular data or data roaming must be on. Background data, including app refresh, email sync, and software updates, can start a session. Verizon says you are charged only on days you use the device there. Without TravelPass, or in a country TravelPass does not include, pay-as-you-go rates apply. If the device has two mobile numbers, charges apply to each line's own international plan. Calls can be within the country you are visiting and back to the US. A call to any other country is charged as a call from the US to that country. | Verizon, TravelPass |
| AT&T lists Japan among International Day Pass destinations and says the list can change. Business and government customers are not eligible for International Day Pass. | AT&T, International Day Pass destinations |
| AT&T says International Day Pass, added to an unlimited plan, includes unlimited talk, text, and high-speed data, and that coverage and data speed vary by destination and may be changed. The 24-hour period starts the first time you use data, send a text, or make or accept a call in an included destination. AT&T says you are charged only on days you use it, and that you do not need to remove the pass when you return to the US. From an included destination you can call that destination, any other included destination, and back to the US. Calls elsewhere are international long distance. | AT&T, International Day Pass |
| T-Mobile lists Japan among the countries included with its international roaming benefit. A qualifying plan and a capable device are required. T-Mobile says the benefit is not for extended international use, that you must reside in the US, that primary usage must be on the US network, and that the device must register on the US network before international use. | T-Mobile, international roaming services |
| T-Mobile says Experience Beyond and Go5G Next include up to 15GB of high-speed data in 215+ countries and destinations, then unlimited data at the maximum speed that page states. Experience More, Go5G Plus, and Magenta MAX include up to 5GB, then unlimited data at the maximum speed that page states. Those descriptions include texting. Voice calls while roaming in covered countries are billed at the per-minute rate that page states. An Essentials plan gets texting in 215+ countries and destinations, and data on that plan needs an International Pass. Answering a call is charged for the call. If the phone is on and an incoming call goes to voicemail, T-Mobile says the call is charged for one minute. If the phone is off or in airplane mode, a voicemail left in the inbox is not charged. | T-Mobile, international plans |
| Rogers says a Roam Like Home Travel Pass lets you use the data, talk, and text included in your plan, and that the pass has no separate usage allowance. Japan is on the Asia destination list. The Asia pass is listed for 3, 7, 14, and 30 days. You can buy a pass up to 60 days before the travel date and set the start date. Rogers says you cannot backdate it. When it starts, Rogers says it begins at 12 a.m. Eastern Time on the start date and ends at 11:59 p.m. Eastern Time on the final day, and that sentence names day 14 or day 30. You are covered in the destination you are visiting and in destinations included in your mobile plan. Calls and texts to another destination can be long distance even when that destination is on the pass. Rogers says you are not charged Roam Like Home Daily while you travel inside the pass destinations and duration. | Rogers, Roam Like Home Travel Pass |
| TELUS lists Japan under eligible Asia destinations for Easy Roam Travel Passes, and under international Easy Roam destinations in Asia and the Middle East. TELUS says those destination lists can change. The Asia 14-day pass uses the data from your existing plan plus unlimited talk and text within the eligible destinations. TELUS says that pass starts once you arrive and must be used within 30 days from the date it is added. | TELUS, Easy Roam |
| TELUS says Easy Roam includes data from your monthly plan, calls to numbers in Canada and within the country you are calling from, and incoming and outgoing texts to any phone number. Incoming texts do not start Easy Roam. It starts only if you use data, send a text, make or answer a call, or check voicemail, and it is then valid until 11:59pm in the time zone where you are travelling. Picture and video messaging, including iMessage, uses data rather than text messages. Calls to numbers outside Canada and the country you are calling from are at the pay-per-use rate. Usage past the monthly plan is charged as it would be in Canada. TELUS says you do not need to remove Easy Roam when you return to Canada. | TELUS, Easy Roam |
| Telstra lists Japan as a Zone 2 destination in Asia. A Day Pass adds roaming data, calls, and SMS, and you keep your current number and SIM. Zone 2 includes 2GB of data a day, unlimited standard calls, and unlimited SMS. Once enabled, it starts when the service is switched on and used in an eligible destination. Telstra says a day is charged when you make or receive a call, send an SMS, or use data, including background data, and that receiving an SMS does not start the pass. On Upfront plans it expires 24 hours from use. On other plans it expires at 11:59pm Australian Eastern Standard Time. Unused data expires at the end of the day. With more than one service on the device, Telstra says either number could incur international roaming charges. Telstra says VoLTE will increasingly be required to make or receive calls, including emergency calls, while roaming. | Telstra, International Roaming Day Pass |
| A Wakamo Japan plan lists no phone number and no voice calls. | Wakamo Japan plan page |
| Where a plan has an SMS value, the plan page shows it. A plan with no value shows no SMS claim. | Wakamo Japan plan page |
| The Japan plan page shows the data amount and the validity of the plan you are viewing. This page states neither number. | Wakamo Japan plan page |
FAQ
Should I use roaming or a travel eSIM in Japan?
Use your home carrier's roaming when that carrier's own page says the plan or pass covers the calls, texts, or data you want in Japan. Use a travel eSIM when you want a separate data plan. The Japan plan page shows that plan's data amount and validity, and this page states neither number.
Does Verizon TravelPass include Japan?
Verizon lists Japan as a TravelPass country. TravelPass includes unlimited calls, unlimited texts, and unlimited data, and after 5GB of high-speed data the rest of the session continues at the slower speed that page states. A session starts when you use the device, including background data, and cellular data or data roaming has to be on.
Does AT&T International Day Pass include Japan?
AT&T lists Japan as a destination. On an unlimited plan, the pass includes unlimited talk, text, and high-speed data, and coverage and data speed vary by destination. The 24-hour period starts the first time you use data, send a text, or make or accept a call. Business and government customers are not eligible.
Does T-Mobile include roaming in Japan?
T-Mobile lists Japan among included roaming countries. Experience Beyond and Go5G Next include up to 15GB of high-speed data in 215+ countries, then data at the maximum speed that page states. Experience More, Go5G Plus, and Magenta MAX include up to 5GB on the same pattern. An Essentials plan gets texting, and data on that plan needs an International Pass. The benefit is not for extended international use.
Does a Rogers Travel Pass include Japan?
Rogers lists Japan on the Asia Travel Pass list. The pass uses the data, talk, and text already in your plan and has no separate allowance. Calls and texts to a country other than the one you are visiting can be long distance, even if that country is on the pass.
Does TELUS Easy Roam include Japan?
TELUS lists Japan for the Asia Travel Pass and for international Easy Roam. Easy Roam uses data from your monthly plan, includes calls to Canada and within the country you are in, and includes texts. It starts if you use data, send a text, make or answer a call, or check voicemail, and incoming texts do not start it.
Does a Telstra Day Pass include Japan?
Telstra lists Japan as Zone 2. The Day Pass includes 2GB of data a day, unlimited standard calls, and unlimited SMS, and you keep your number. It starts when the service is used in an eligible destination, including background data. Receiving an SMS does not start it.
Can background use start a roaming day?
Verizon says background data can start a TravelPass session once data roaming is on. TELUS says Easy Roam starts if the phone uses data, sends a text, makes or answers a call, or checks voicemail, and that incoming texts do not start it. Telstra says data use, including background data, a call, or a sent SMS can start a Day Pass, and that receiving an SMS does not.
Does a Wakamo Japan plan replace those calls and texts?
No. A Wakamo Japan plan lists no phone number and no voice calls. Where a plan has an SMS value, the plan page shows it. The plan page also shows the data amount and the validity, and this page states neither number.
Sources
Verizon, TravelPass countriesverizon.com
Verizon lists Japan as a TravelPass country. The page says the plan travels with unlimited data, talk, and text in 210+ countries and destinations.
Accessed 2026-10-21.
Verizon, TravelPassverizon.com
TravelPass includes unlimited calls, unlimited texts, and unlimited data, and after 5GB of high-speed data the rest of the session continues at a slower speed stated on the page. A 24-hour session starts when the device is used, data roaming must be on, and background data can start a session. A qualifying plan and a world device are required. Unlimited Plus and Unlimited Welcome add TravelPass automatically.
Accessed 2026-10-21.
AT&T, International Day Pass destinationsatt.com
AT&T lists Japan among International Day Pass destinations. Destinations can change. Business and government customers are not eligible for International Day Pass.
Accessed 2026-10-21.
AT&T, International Day Passatt.com
Added to an unlimited plan, International Day Pass includes unlimited talk, text, and high-speed data, and coverage and data speed vary by destination. The 24-hour period starts on the first use of data, a text, or a call. AT&T charges only on days the device is used. Calls can go to the destination, to other included destinations, and back to the US.
Accessed 2026-10-21.
T-Mobile, international roaming servicest-mobile.com
T-Mobile lists Japan among countries included with the international roaming benefit. A qualifying plan and a capable device are required. The benefit is not for extended international use. The customer must reside in the US, primary usage must be on the US network, and the device must register on the US network before international use.
Accessed 2026-10-21.
T-Mobile, international planst-mobile.com
Experience Beyond and Go5G Next include up to 15GB of high-speed data in 215+ countries and destinations, then unlimited data at a maximum speed the page states. Experience More, Go5G Plus, and Magenta MAX include up to 5GB, then the same kind of cap. Essentials includes texting, and data on that plan needs an International Pass. Voice calls use a per-minute rate the page states. Answering a call is charged, an unanswered call while the phone is on can be charged for one minute, and a voicemail left while the phone is off or in airplane mode is not charged.
Accessed 2026-10-21.
Rogers, Roam Like Home Travel Passrogers.com
A Roam Like Home Travel Pass uses the data, talk, and text in the plan and has no separate allowance. Japan is on the Asia list. Asia passes are listed for 3, 7, 14, and 30 days. A pass can be bought up to 60 days ahead and cannot be backdated. Coverage is the destination being visited and destinations in the mobile plan. Calls and texts to another destination can be long distance.
Accessed 2026-10-21.
TELUS, Easy Roamtelus.com
TELUS lists Japan for Asia Easy Roam Travel Passes and for international Easy Roam. The Asia 14-day pass uses plan data plus unlimited talk and text, starts on arrival, and must be used within 30 days of being added. Easy Roam includes monthly-plan data, calls to Canada and within the country you are calling from, and texts. It starts on data use, a sent text, a call, or voicemail, not on an incoming text, and lasts until 11:59pm in the local time zone.
Accessed 2026-10-21.
Telstra, International Roaming Day Passtelstra.com.au
Telstra lists Japan as Zone 2 in Asia. A Day Pass adds roaming data, calls, and SMS, and the number and SIM stay. Zone 2 includes 2GB of data a day, unlimited standard calls, and unlimited SMS. It starts when the service is used, including background data. Receiving an SMS does not start it. Upfront plans expire 24 hours from use. Other plans expire at 11:59pm Australian Eastern Standard Time.
Accessed 2026-10-21.
Wakamo Japan plan pagewakamo.io
Wakamo product information. No Japan plan lists a phone number or voice calls. Where a plan has an SMS value, the plan page shows it. The page also shows the data amount and the validity of the plan being viewed. This page states neither number.
Accessed 2026-10-21.