Google 用户
The 2.0 versions are useless. There's no icon in task bar showing app on/off status and the app is closed and won't take any incoming calls as soon as you switched out of this app on the phone. I switched back to 1.0 version, which is usable. If they keep on having 2.0 versions like this, I'll stop using it. An update: I updated the app to 2.08 version and this is a lot better now. The push notification works and I am able to receive phone calls. I can also send sms msg but cannot receive any.
Zadarma Project
2019年3月12日
New verison dont need to be in background to recieve a calls. It helps to save your battery and traffic. So it is nothing to on/off, you always can recieve the calls with the "push" notifications.