This post shows how to connect a Sony XB43 wireless speaker to an iPhone smart phone. Doing so gives you a much bigger, and clearly better sound when you stream music from the iPhone to speakers like this one.
How to Connect Sony XB43 to iPhone, Step by Step
With your Sony speaker switched OFF (power button is dark), run through this routine to connect it to your iPhone mobile device. For this demo, we use an iPhone 12 Pro Max.
1. Go to the Home Screen on your Device
Firstly, press and release the side button (right edge of the phone) and enter your passcode or Face Id to bring up the Home screen.
2. Find the Settings App
Next, flip through the Home screen pages until you find the Settings app. We found ours on the second page of the Home screen, as shown next.

3. Bring up the Settings App
Thirdly, tap the Settings app icon.
The smart device then shows the first page of its settings, as shown in the next step.

4. Go to the Bluetooth Option to Continue with How to Connect Sony XB43 to iPhone
Tap the Bluetooth item on the Settings page.
Then you get the Bluetooth Settings screen, as we show next.

Note that our Bluetooth is running here. But since our test Sony XB43 (the XB43) is currently shut OFF (is not in Bluetooth pairing mode), it does not show up in the BT devices list. Also, we don’t see it since we’ve never paired this speaker with this iPhone before.
5. Turn On your Speaker
Turn on the Bluetooth speaker by quickly pressing its Power button. See this, pointed at by the green arrow, in the next picture.

The speaker then powers up, and its status lamp glows, as seen in the next picture.

Also, the Bluetooth lamp will blink in some pattern to indicate that the speaker is ready to receive a Bluetooth pairing request, as we see in the next picture.

If it blinks evenly, then it’s passively waiting for a Bluetooth connection request to come in.
But if it fast flashes or blinks in a pulse-pulse-pause, pulse-pulse-pause pattern (double flashing), then it’s broadcasting its pairing information over Bluetooth so other devices can find it. I.e. The speaker is in pairing mode in this case.
Moreover, since our test iPhone does not know about this speaker, this Sony XB43 will not pair with it automatically.
6. Put the XB43 in Discovery Mode
Now, to see this speaker on your iPhone, place it into Bluetooth pairing mode if it’s not in that mode already. To do that, press the Pairing button. Then release it when the unit beeps and speaks that it’s in pairing mode. Also, the Bluetooth Status lamp begins its rapid or pulse-pulse-pause, pulse-pulse-pause flashing pattern, as we see in the last picture.
Find the Pairing button on the top button panel, second button from the left as shown next.

7. Find the Speaker on your Phone to Continue with How to Connect Sony XB43 to iPhone
See the screen shot next. We found our speaker, as we point out with the green arrow.

8. Connect with your XB43
Tap the listed speaker in the Other Devices list.
The iPhone then pairs with the test speaker here.
I.e. The iPhone’s Bluetooth Settings screen might then change to look something like the following. Note the now-paired Sony XB43 entry, as we point out with the green arrow in the next screenshot.

9. Done with How to Connect Sony XB43 to iPhone !
At last, we have now successfully connected the test speaker with a popular iPhone.
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References
Revision History
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- 2023-03-28: First published.