The best thing about this product for me personally was that it allowed my business to have access to more clients than we had before! I also liked how easy they made it for us to track our calls through an app so we could see who called or texted when we were unavailable. My only dislike would be that sometimes you couldn't call certain numbers unless your phone number matched theirs exactly (which can happen). This isn’t really something bad per say but just wanted to let everyone know what happened if anyone else has run into similar issues. Before celitech came along there wasn't much choice out there when looking at cell service providers that offered both landlines AND mobiles which meant having two separate companies handling each part separately. Now since all phones are smart enough to handle internet connections now days it makes sense to combine them together rather then keeping 2 seperate programs running.