Switching between two lines during a call

During a call, if you need to make an outgoing call while putting the current call on hold: 

1. Tap on the ‘Add call’ icon

2. Choose а contact that you’d like to call from the list.

OR  Press the Numpad iconto dial a phone number.

3. After the connection has been established, you can switch between the two calls by tapping on a pause icon.

4. Tap on the icon to switch between lines.