UniTel Voice is a mobile app designed for Android users that allows UniTel Voice customers to connect their smartphone to their business phone system. This app provides users with full access to their business phone system, making it easy to separate personal calls from business calls, answer calls on their business line, and make calls showing their business number. Moreover, users can call fellow employees on their extension, transfer callers to fellow employees, check business voicemail messages, view contacts, call logs, and history, send & receive fax messages, use 3-way conference calling, and manage their phone system’s features. The UniTel Voice app is free to UniTel Voice customers and is included with all business phone system plans.

The UniTel Voice mobile app is designed to sync with users' personal employee extension, and they must use their employee extension’s login credentials to sign in to this app. The app runs off users' local wifi to make and receive calls, so for the best experience, it is recommended to use a strong wifi connection. Moreover, if a user has a weak wifi connection or a poor data signal, it can affect their call quality. The UniTel Voice mobile app virtually turns users' personal smartphones into their office phone with all the professional features they would expect from a physical desk phone.