If you are a business owner who wants to monitor the business calls on company-owned cell phones, you could use a monitoring app or software. To do this, you need the permission of employees and should have clear monitoring policies in place. However, such apps don’t come with enterprise-level features. Moreover, the legality of using such apps is a matter of debate.The best way to overcome this problem is to switch to a cloud-based business phone system that offers call monitoring as a feature. Most of these VoIP phone system providers have a mobile app that your employees can use to make calls from their smartphones using a business number.You can access and monitor all business calls your agents and employees make through the dashboard. You can listen to live calls without agents or customers knowing, record calls, and intervene during active calls if required.