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Ifixit gives fairphone 5 a 10/10 on repairability and maintanence
(www.ifixit.com)
This is a most excellent place for technology news and articles.
Ah, so thats what you meant by splitter. Might I suggest, there are some very cheap battery powered Bluetooth receivers. Those might be a good solution for you, in case you hadn't considered something like that.
Yes, that's actually exactly what I ended up buying. It's got a pause/play button, so I hit that and take the whole thing with me.