Sony Cyber-shot DSC-RX100 IV - Manual (Page 199)

Select on Smartphone:
Displays all images recorded on the product’s memory card on the smartphone.
Note
You can only transfer images that are saved on the camera's memory card.
You can select an image size to be sent to the smartphone from [Original], [2M] or [VGA].
To change the image size, refer to the following steps.
For Android smartphone
Start PlayMemories Mobile, and change the image size by [Settings]
→ [Copy Image Size].
For iPhone/iPad
Select PlayMemories Mobile in the setting menu, and change the image size by [Copy Image
Size].
Some images may not be displayed on the smartphone depending on the recording
format.
RAW images are converted to JPEG format when they are sent.
You cannot send XAVC S or AVCHD format movies.
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
→ [Wireless] → [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].
[216] How to Use Using Wi-Fi functions Transferring images to a Smartphone
Sending images to an Android smartphone (NFC One-
touch Sharing)
With just one touch, you can connect this product and an NFC-enabled Android smartphone,
and send an image displayed on the product screen directly to the smartphone. For movies,
you can only transfer MP4 movies recorded with [ File Format] set to [MP4].
1. Activate the NFC function of the smartphone.
2. Display a single image on the product.
3. Touch the smartphone to the product.