au will start offering a “Watch Number Plan” that allows you to use 250MB of data communication for 385 yen per month in the “Watch Number” service that enables calls and data communication with Apple Watch alone on October 18th. ..
With “Watch Number”, a new phone number will be issued to Apple Watch, so even children who do not have an iPhone can send messages, make calls, share location information with their families, and can also be used as a watching device. ..
As mentioned above, this service is positioned as a watching service for children who use Apple Watch without having an iPhone, and for users using iPhone, the same phone number as iPhone is given to Apple Watch. We provide a “number share” service that you can use.
Source：KDDI
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