1. Any iOS devices which are being used for Live:Air Remote should not be used for phone calls.
2. It is recommended that iOS devices are placed in Do Not Disturb mode when streaming to prevent any drops from that device. See Apple's article at this link.
3. The Live:Air Remote app must be running in the foreground on the iOS device. If you press the home button on the iOS device or open another app, or if the device times out from the Auto-Lock setting or is manually placed on the Lock Screen, the streaming connection through that device will stop.