personne ne soit capable de se passer de son portable

Question

Why is this sentence knocked into the subjunctive?

Selon une étude menée - why is it 'menée' and not 'a mené' ? I'm confused, is it to do with the passive voice? And also why can't I use 'd'après' to mean 'according to'?

Accepted Answer

1) The subjunctive is used because the first part of the sentence is "It would seem...", which expresses a possibility, not a certitude. This is the reason for the subjunctive.
2) Selon une étude menée en décembre 2015... -- According to a study conducted in December 2015.The participle menée is used like an adjective and matches the gender of une étude.

Answer

Bonjour James,
'D'après' is now accepted as a correct answer.
I hope this is helpful.
Bonne journée !