Sony ILCE-7C Help Manual page 537

Depending on the format of the still image, movie, slow-motion movie, or quick-motion movie, it may not be possible to play it
back on a smartphone.
This product shares the connection information for [Send to Smartphone] with a device that has permission to connect. If you
want to change the device that is permitted to connect to the product, reset the connection information by following these steps.
MENU → (Network) → [Wi-Fi Settings] → [SSID/PW Reset]. After resetting the connection information, you must register the
smartphone again.
When [Airplane Mode] is set to [On], you cannot connect this product and the smartphone. Set [Airplane Mode] to [Off].
While you transfer many images or long movies, we recommend that you supply power to the camera from a wall outlet (wall
socket) using the AC Adaptor (supplied).
Related Topic
Imaging Edge Mobile
Controlling the camera using a smartphone (NFC One-touch remote)
Controlling the camera using an Android smartphone (QR Code)
Controlling the camera using an Android smartphone (SSID)
Controlling the camera using an iPhone or iPad (QR Code)
Controlling the camera using an iPhone or iPad (SSID)
Sending images to a smartphone (NFC One-touch Sharing)
Send to Smartphone Func.: Sending Target (proxy movies)
Airplane Mode
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