This post shows how to connect a Logitech Wonderboom 2 BT speaker to an iPhone and other iOS devices such as an iPad. Start with your speaker shut OFF (all dark LEDs). Then, follow along to connect it with iPhone.
How to Connect Logitech Wonderboom 2 to iPhone
1. Visit the Home Screen on your iPhone
Press the Home button to get to the Home iPad page. See our Home screen as shown next.
2. Find the Settings App
We found ours on the second page of the Home screen.

3. Bring up the Settings App
Tap the Settings app icon.
The iPhone then displays the first page of its Settings screen, as we show in the next screenshot

4. Go to the Bluetooth Settings Page to Continue with How to Connect Logitech Wonderboom 2 to iPhone
Tap the Bluetooth item, as the green arrow points out in the last screenshot above.
Our Bluetooth Settings screen then comes up as follows. Note that our Bluetooth is ON here. But since the speaker is currently OFF, this test speaker does not show in either the My Devices or Other Devices lists on the tablet yet, Why? Because we have yet to connect it with this device for the first time. Plus, the speaker is not yet transmitting its Bluetooth connection info. See this scenario, that appears as shown next.

Note in this picture that no Logitech speaker appears yet.
5. Power On your Logitech Wonderboom 2
Turn on the unit by quickly pressing its Power button. See this button pointed out in the next picture.

The speaker then comes on.

6. Put your Wonderboom into Pairing Mode
Now, to see your Logitech speaker on your iPhone, place it into BT pairing mode. For that, press and hold the Pairing button until the speaker plays a sequence of rising electronic sounds.

Plus, a lamp in this button starts quickly flashing white. See this in the last picture above.
7. Find This Bluetooth Speaker on your iPhone
See the picture next. We found ours, as pointed out in dark blue.

8. Connect with your Speaker
Tap the listed speaker in the Other Devices section of the Bluetooth Devices list, shown above.
Your iPhone then connects with the speaker (appears as “WONDERBOOM 2” in this demo).
The Bluetooth Settings screen then changes to display something like the following.

Note that the speaker now appears as connected, as pointed out in the last picture.
9. Done with How to Connect a Logitech Wonderboom 2 to iPhone !
Lastly, we have now successfully connected this wireless speaker with an iPhone. Audio output from that phone now plays on this speaker.
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Revisions Log
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- 2022-09-23: First posted.