I've used Line2 for over 5 years now, it's my main communication tool and has replaced all other voice messengers. Everything works as expected, no bugs to report yet. The only thing I dislike about line2 is that they don't offer more call forwarding options besides the standard 3 numbers, but this can be easily resolved with some third party apps. If you are looking for an easy way to communicate with clients, Line2 is the best choice.
It's very simple and easy to use (you won't needโฆ