0035ビジネスモード is a mobile service provided by NTT Communications Corporation for business use. This service allows employees to use their personal mobile phones for business purposes. The service is easy to use, and registered mobile phones can use it. The main features of this service include a dial pad, favorites, phonebook, smartphone call history, making calls from call history or contacts, editing contacts and call history, contact group settings, adding "184" to calls, and adding "" to the beginning of numbers to automatically register them to contacts. The app also has a filter function for the contact display account.

It is important to note that to use this service, one must apply through an NTT Communications Corporation sales representative. The app does not allow calls to certain phone numbers, such as 110, 117, and 177, as well as numbers that begin with 0XX0, 00XX, 060, 020, or #. Before using the app, users must read and agree to the software license agreement. The app does not send any information to external servers.