I really dislike the cellphone and how much time and idles it has in Sims 4

They should strip it from the code and apply it to a reward trait.
Therefor if you want that constant phone checking for your sim, just get the reward trait that gives a fun buff whenever they check their phone
And while they are at it, make phones purchasable.

You don't get annoyed by it until you buy one.They don't get annoyed until they drop and break it.
The Sims 2 got it right.