Some first …
Compatibility & Functionality tests
3x = three taps | 2x = two taps | 2s = hold 2 seconds
FP1 Fairphone OS 1.8.7 KolaNut | Android 4.2.2
| App / Feature | Works? | L Skip back 3x | Pause 2x | R Skip next 3x |
|---|---|---|---|---|
| Pairing |  |
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| Sound Recorder | |
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| Music | |
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| VLC | |
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| ANC 2s | |
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| Voicethrough 2s | |
FP2 Fairphone Open 21.10.0 | Android 9
| App / Feature | Works? | L Skip back 3x | Pause 2x | R Skip next 3x |
|---|---|---|---|---|
| Pairing | |
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| Sound Recorder |  |
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| Simple Voice Recorder (F-Droid) | |
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| Music | |
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| VLC | |
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| ANC 2s | |
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| Voicethrough 2s | |
FP3 Murena /e/OS 0.19 | Android 10
| App / Feature | Works? | L Skip back 3x | Pause 2x | R Skip next 3x |
|---|---|---|---|---|
| Pairing | |
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| Sound Recorder | |
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| Simple Voice Recorder (“Apps”) | |
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| Music | |
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| VLC | |
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| ANC 2s | |
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| Voicethrough 2s | |
As you can see, I have not been able to use the microphone to record my voice yet under /e/OS 0.19 on my FP3+. Still awaiting if it works for calls, but more optimistic there.
I cannot test the Voice Assistant functionality (needs a Google-certified OS, I guess), so I omitted that control (hold left earbud for 2 s) from the table.
As to ANC and Voicethrough, I really just confirm (not that easy to test by talking to yourself 
) that the controls result in audibly different modes – and I assume that those work completely independently of the device the earbuds are connected to.
UPDATE 18:47:
Just using them to listen to FLAC tracks played through VLC … from my early 2009 desktop computer.
UPDATE 18 Nov:
Easily worked with a Win10 tablet as well (plus made me figure out the unmentioned volume control, see below).