Not exactly the answer to your question but France recently adopted a repairability score that has to be shown, just like the energy efficency class or nutrition labels.

The criteria are:

1- Documentation

2- Ease of disassembly, with a subsection on the necessary tools and a focus on the parts that are most likely to be serviced (for smartphones: battery, screen, ...)

3- Availability of spare parts

4- Price of spare parts relative to the finished product price

5- Extra criteria which depend on the type of item, for a smartphone, software updates are in this category

They've got a whole study about it, if you've got time to read it (I haven't :):

https://www.europarl.europa.eu/RegData/etudes/STUD/2020/6487...

The article gives some examples, but I think more broadly the European Right to Repair efforts seem to align the repairability of consumer electronics with what we've come to expect from automobiles.