Fairphone 4 (2021) parts: https://www.fairphone.com/shop/category/spare-parts-4?catego...

Fairphone 5 (2023) parts: https://www.fairphone.com/shop/category/spare-parts-4?catego...

Parts for the Fairphone 2 (2015) and Fairphone 3 (2019) aren't available anymore, but I suppose that's not all that surprising after 11 respective 7 years.

Afair, they started running out of some Fairphone 3 spare parts around 2024 and kept the ones they still had for warranty repairs. Source: I own one (and switched to the Fairphone 6 early this year).