Sony h.ear on 3 Mini Wireless Help Manual page 117

Help Guide
Wireless Stereo Headset
h.ear on 3 Mini Wireless (WH-H810)
One-touch connection (NFC) does not work.
Keep the smartphone close to the N-mark on the headset until the smartphone responds. If it still does not respond,
slowly move the smartphone around in different directions.
Check that the NFC function of the smartphone is turned on.
If the smartphone is in a case, remove the case.
NFC reception sensitivity varies depending on the smartphone. If it repeatedly fails to connect, connect/disconnect
on the smartphone.
You cannot establish a one-touch connection (NFC) while charging the battery, because the headset cannot be
turned on. Finish charging before establishing the one-touch connection (NFC).
You cannot establish a one-touch connection (NFC) when the headphone cable is connected to the headphone cable
input jack. Remove the headphone cable before establishing the one-touch connection (NFC).
Check that the connecting device supports the NFC function.
Check that the Bluetooth function of the smartphone is turned on.
Related Topic
One-touch connection (NFC) with an Android smartphone
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