I have that old green one, but it doesn't refresh itself, and doesn't give me notifications.
I guess I got what I paid for.

They all seem to have problems. I'm no closer to switching to something else.

Messages come in and sometimes it takes two days to get a notification.

I have other problems with VM, but I don't think the app is the cause. Recently, I've been getting a lot of phantom messages. They register in my VM inbox as 3 mins long, but there's no actual voice recording.

I never know what is promotion. We used to always check with consumer reports. Not sure what they say.