Sony ILCE-7S - Manual (Page 187)

3. Check the composition of the image on the smartphone screen, and then press the
shutter button (A) on the smartphone to shoot an image.
Use button (B) to change settings such as [EV], [Self-Timer] and [Review Check].
Note
When you record movies using a smartphone as a remote controller, the monitor of the
product becomes darker. Also, you cannot use the viewfinder for movie recording.
This product shares the connection information for [Smart Remote Embedded] 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 →
(Wireless)
→ [SSID/PW Reset]. After resetting the connection information,
you must register the smartphone again.
Depending on future version upgrades, the operational procedures or screen displays are
subject to change without notice.
[227] How to Use Using Wi-Fi functions Controlling this product using a Smartphone
One-touch connection with an NFC-enabled Android
smartphone (NFC One-touch remote)
You can connect this product and an NFC-enabled Android smartphone with one touch,
without performing a complex setup operation.
1. Activate the NFC function of the smartphone.
2. Switch this product to shooting mode.