5 stars: Overall it's come a long ways over the years with things like call quality on data, I always have it set up to forward to my actual cell number for calls though just to be safe. A couple times over the years I've lost a phone or service, with this I could throw it up on my laptop or install it in another phone quick, really handy in a jamb.
4 stars: It is a good app but it has glitches from time to time. Sometimes you have to uninstall the app to correct the issues and that is inconvenient, like for example I had to make a phone call and choose which number to use and the app won't let me change the settings Or like sending multiple pictures in one text that is impossible. (Only one per text) But overall as a secondary cell number it's ok.
4 stars: The app (and service) works pretty solid most of the time. Just make sure you have a decent Internet connection because it doesn't like caching things. It also doesn't like it when you attempt to send a message, but the service mode changes (Wi-Fi to #G or vice-versa). It really needs a way to queue a message with a spotty connection or auto retry of a failed message though. Also, photos send / receive at a fairly low resolution.
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