3 stars: Had worked for me flawlessly for over a year. Got new phone with a Android 7.0 a few days ago, app no longer works. Not sure if it's a problem with the app or the OS, but my settings still have not changed. Will improve review once it starts working again. For clarification, registration works, but calling does not. SIP calling over mobile network only, not tested on wifi.
4 stars: There is some issue in this release . While creating sip account, it is hanging on login screen although it is registered in the background
5 stars: Excellent SIP phone client. If it doesn't work for you, it's bad setup, the application is great.
5 stars: The best among open source sip phone so far
5 stars: Tried a few other sip phones before gong with Linphone. Good UI, sound volume, call quality and stability. Can't comment on how good it is for multiple accounts as I only use one right now.
5 stars: I recommend this. Am using this with my VoIP service provider and simply excellent it works like a charm, it's performance on mobile data is superior amazingly enough, than on my workplace WiFi (QOS suspect).
5 stars: Excellent.
3 stars: The app works for me fine, but I can't get a Bluetooth device to work with this app to save my life. I can only get sound out of one of my Bluetooth headset, no mic. My other doesn't give me sound or mic. Wired headphones with a mic worked once for me.
5 stars: Awesome app, still giving it 5 star despite a missing simple feat...