Could be 5 Stars...

...if calls showed up in queue quicker. Sometimes, unanswered calls and vm messages show up hours later--or not at all. At times, calls do not ring through. In my (tour) business, that tends to result in lost revenues. Potential customers find something else to do. All in all, I would grade Line2 a B-. A functional mobile business line without the hassle of physically handling two phones. However, definitely room for improvements.

Carrie SZ about Line2 - Second Phone Number, v9.5.6