Panasonic HC-VX870 Owner's Manual page 202

≥ When you record still pictures by using the Wireless Twin Camera function, it may take longer
than usual to achieve focus. (l 26)
≥ The Fade function's image effects do not affect the Sub Window.
≥ When no image is transmitted to the Sub Window continuously for approximately 4 minutes or
longer, the Wi-Fi connection will be terminated.
≥ When the "Image App" screen disappears, image transmission to the Sub Window stops. (The
Wi-Fi connection stays connected.) This may occur when, for example, the smartphone receives
a call or you press the home button.
If you start up "Image App" on the smartphone again, image transmission to the Main Camera will
restart and the Sub Window will be displayed automatically.
≥ You cannot record Wireless Twin Camera images on the smartphone.
- 202 -