It sounds like electrical interference, but whatever this clicking or popping sound is, it's extremely irritating. The good news is that you may be able to fix it yourself, but the bad news is that you may have to take it to Apple.
A HomePod on show in an Apple Store
It's another rare Apple bug. You may never get it, and if you do, there might be a quick fix -- but it could also be serious. If your HomePod is making a clicking or a popping sound, work through this fix right now. We can't tell what proportion of cases it fixes, only that it does repair the issue for some and it did for us.
If it doesn't work for you, though, then your only recourse is to contact Apple support. Hence the need for speed: get in touch with them before your warranty runs out.
The problem is that your HomePod may make an occasional clicking noise, perhaps a popping one, which sounds like some interference.
We found it was happening when the HomePod was silent, but there are reports of it happening during music playback too.
The sound reminds us of interference from a radio.
Sometimes it sounds as if we've got a nearby radio interfering with the HomePod. At other times, it sounds more like the the HomePod is somehow reacting to your typing. Then there are also times when, since the speaker is so good at projecting, it can sound as if there's a tapping somewhere behind the device.
Apparently this can happen at any time, or at least there's no known specific cause, but it may be more common when the HomePod is not set up.
We moved our HomePod a few feet, and we realised it needed re-setting up when it refused to act on a request to add a reminder. However, we didn't get around to it immediately, and the next day started to hear this sound.
The simple fix
You can guess what the first thing to try is. Re-set up your HomePod. Try this even if you haven't just moved it, as the sound problem can be a software issue.
On your iPhone or iPad, open the Home app, and find the room your HomePod is in. Tap to select that, and then from the icons that appear, press and hold on the HomePod tile.
Remove your HomePod and set it up again.
From the screen that appears, tap the Settings button at bottom right. Then scroll to the very bottom and choose Remove Accessory.
Next, come out of the Home app and hold your iPhone close to the HomePod. It seemed to us to take longe for the HomePod and iPhone to recognize each other now than it did when we first got the speaker, but within a minute, they will connect.
Work through the set up procedure, until Siri starts playing you a selection of music.
Let it play for a while, then stop it for a time, and if you're in luck, you won't hear any more clicks.
When you're not in luck
If you still get the clicks, it's not a software issue, it's hardware.
There's currently no published advice from Apple about this issue, and we stress that it's rare, but rarity is no help when you're the one who has it.
So contact Apple Support and talk to them about the problem.
Maybe it's a sign of just how very much we love and rely on our HomePods, or maybe it's just a sign of how expensive these things are, but the clicking bug is actually upsetting. Hopefully you'll get the same sense of relief we did when a re-setup fixed it.
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