1.documentation available
2.ease of repair
3.availability of spare parts
4.price or spare parts
5.category specific to the product (not the same for a washing machine or a computer).
Each of them give you a score out of 20, and the total is divided by 10. So you can have 0 on the 2., making the phone hard to repair, but still having a 8/10 score.
In the end its similar to Booking reviews, where 6/10 is very low and you want to avoid this hotel.
Details (in French) https://www.ecologie.gouv.fr/indice-reparabilite
1.doesnt provide any repair documentation at all
2.even Apple themselves dont repair in house, and instead replace devices.
3.doesnt offer spare part at all _unless_ you sign up to their "share all of your clients personal data and your accounting books with us" program, and even then its only batteries and screens at massive margins (more than whole working used device).
4.see above
5.no idea what goes there
So we end up at 4 x 0.
They have fixed multiple out of warranty problems for free or for parts-only, where other companies would have charged much more to do so. I think they don't flaunt this customer service because they don't want people to take it for granted, and they don't want to attract the type of customer that would abuse the policy.
Edit: The EU pushed right to repair, right? Now see what Apple did to screw France [1]. Their latest and greatest devices somehow have a repairability score of around 6.5/10. How is it possible?
[1] https://appleinsider.com/articles/21/02/26/apple-now-display...