1121
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.
While I didn't have that issue, switching my fp4 to e/OS did give me roughly 50% more time on the battery. There are software trade offs though so if you just want the OEM experience then I guess it'll be a case of waiting for an update.