Great reception on calls, when the app actually lets you make calls. For weeks now I have been getting a "no signal" notification anytime I try to make calls. App worked great for about a week or two and since then no signal. I have gone through all the troubleshooting recommendations and no change. Judging from the copious amount of ppl responding on the apps help page, it seems to be the same issue everybody is having with this app. Very unreliable. I even bought extra minutes for it. Waste.