Sony UWP-D27 2-Person Camera-Mount Wireless Omni Lavalier Microphone System (UC90: 941 to 960 MHz) - Manual (Page 359)

Depending on the smartphone, the transferred movie may not be played back correctly. For example, the movie may not play
smoothly, or there may be no sound.
If the Image Index is displayed on the product, you cannot transfer images using the NFC function.
If you cannot make a connection, do as the following:
Launch Imaging Edge Mobile on your smartphone, and then move the smartphone slowly toward the (N-Mark) of this
product.
If the smartphone is in a case, remove it.
If the product is in a case, remove it.
Check whether the NFC function is activated on your smartphone.
When [Airplane Mode] is set to [On], you cannot connect the product and the smartphone. Set [Airplane Mode] to [Off].
Related Topic
Imaging Edge Mobile
Send to Smartphone Func.: Send to Smartphone
Send to Smartphone Func.: Sending Target (proxy movies)
Airplane Mode
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