No, you don't have to, but you can if you want to. UniTel Voice offers a virtual phone system that works with your existing phones (i.e., cell phones, landline, or VoIP). Calls that come into your UniTel Voice Number can ring an app on your iPhone or Android phone, or forward to whatever existing phone numbers, extensions, or voicemail box you designate.
All plans come with the ability to forward calls to our mobile app if you would like to forward calls to a softphone or IP-device you'll want to choose our "Office" plan.