Sony SRS-X11 Help Manual page 60

The app may not be downloadable in some countries/regions.
3. Start "NFC Easy Connect" on the smartphone.
Make sure that the app screen is displayed.
4. Touch the speaker with the device.
Unlock the screen of the device beforehand.
Keep touching the device on the N marked part of the speaker until the device responds.
If the speaker is off, it will turn on when the device touches it.
Follow the on-screen instructions to establish the connection.
When the BLUETOOTH connection is established,
To disconnect, touch the speaker with the device again.
Note
When using the speaker add function
Touch the speaker where the
connection with the speaker where the
Hint
If you cannot connect the speaker, try the following.
(BLUETOOTH) indicator stays lit.
(BLUETOOTH) indicator is lit. The device cannot make a BLUETOOTH
(BLUETOOTH) indicator is turned off.
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