Short answer
No. A Wakamo Japan plan lists no phone number or voice calls, and SMS is a separate value on each plan page; WhatsApp says a local SIM card can still use your home number, Apple says FaceTime and iMessage continue on your home line when the travel eSIM is the data line or the only line, and LINE says a data-only SIM cannot verify a number in Hong Kong, Japan, Korea, Taiwan, or Thailand.
Fact table
As of 2026-10-20
Each claim names its source. The full source list, with the date each page was read, is below.
| Claim | Source |
|---|---|
| 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 |
| On a supported iPhone, Apple says you can use one line for your home number and another eSIM for the place you are visiting. If both lines stay on, the primary line's capabilities continue. Using the travel eSIM for data can still mean roaming fees from your home line. | Apple Support, travel with eSIM |
| If you use only the travel eSIM, Apple says FaceTime and iMessage continue to work on your home line. With the travel line set for cellular data, you can use FaceTime, iMessage, and other apps for internet calls and messages on your home line. | Apple Support, travel with eSIM |
| WhatsApp uses the same internet connection as web browsing and email. If you use a local SIM card while traveling, WhatsApp says you can still use WhatsApp with your home number. Re-verifying that number needs that number's SIM in the phone, with phone or SMS service enabled. | WhatsApp Help, data roaming |
| For LINE users in Hong Kong, Japan, Korea, Taiwan, and Thailand, verifying a number needs a text message or a phone call. LINE says a device on a data-only SIM, including a plan with no text-message support, cannot be used for that verification. | LINE Help, verification codes |
FAQ
Does a Wakamo Japan eSIM include a Japanese phone number?
No. A Wakamo Japan plan lists no phone number and no voice calls.
Can I make cellular calls or send SMS with it?
A Wakamo Japan plan lists no voice calls. Text messages depend on the plan, and the plan page shows that value when the plan has one.
Can I keep my home number in the phone?
On a supported iPhone, Apple says the primary line's capabilities continue if both lines stay on, and the home line may still charge roaming fees.
Does WhatsApp keep my home number?
WhatsApp says that if you use a local SIM card while traveling, you can still use WhatsApp with your home number. Re-verifying that number requires the SIM for that number in the phone, with phone or SMS service enabled.
Can LINE verify a number on a data-only SIM?
For LINE users in Hong Kong, Japan, Korea, Taiwan, and Thailand, no. LINE says a data-only SIM, including a plan with no text-message support, cannot be used for that verification.
Do FaceTime and iMessage keep my number?
Apple says FaceTime and iMessage continue to work on your home line if you use only the travel eSIM, and that you can use them on your home line when the travel eSIM is the cellular data line.
Sources
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. A plan with no value shows no SMS claim.
Accessed 2026-10-20.
Apple Support, travel with eSIMsupport.apple.com
A supported iPhone can keep a home number on one line and use another eSIM where you are visiting. FaceTime and iMessage can keep working on the home line.
Accessed 2026-10-20.
WhatsApp Help, data roamingfaq.whatsapp.com
WhatsApp uses the phone's internet connection. A local SIM card while traveling can still use WhatsApp with your home number. Re-verifying that number needs that number's SIM, with phone or SMS service.
Accessed 2026-10-20.
LINE Help, verification codeshelp.line.me
For LINE users in Hong Kong, Japan, Korea, Taiwan, and Thailand, verifying a number needs a text or a call. A data-only SIM, including a plan with no text-message support, cannot be used for that verification.
Accessed 2026-10-20.