When you cancel your phone contract, and someone calls your old number, a message comes up telling them your new phone number. For o­ne reason or another, though, NTT DoCoMo and KDDI didn't tell people if you switched to the other company's cellular phone.

This is not the case anymore.

NTT DoCoMo and KDDI (along with Okinawa Cellular) will expand their services o­n September 1st to include the "Contact Phone Number Information Service" for DoCoMo and the "Number Change Information Service" for au. When someone calls the phone number of a contract holder who has since cancelled their contract with each provider, the new services will inform those calling of the contract holder's new phone number.

Services to be expanded this time around are the voice guidance systems that tell people who call the phone numbers of cancelled contract holders of that contract holder's new phone number. Although DoCoMo had previously offered this service informing others of new fixed, DoCoMo, or IP phone numbers, this service enhancement will add au cellular phone numbers to this list. Respectively, KDDI will also provide DoCoMo contact numbers for those who call users who have cancelled their contracts.

For both companies, this service is applied for when cancelling a contract. The information service will operate for 90 days, and there is no cost.

Inspired by:
http://k-tai.impress.co.jp/cda/article/news_toppage/20145.html

Press Release (NTT DoCoMo):
http://www.nttdocomo.co.jp/new/contents/04/whatnew0812.html

Press Release (KDDI, au):
http://www.kddi.com/corporate/news_release/2004/0812/