I would imagine for phones and laptops the extraction of materials (rare earth metals to make fancy new chips, lithium for batteries,etc) is probably the bigger issue.
Having gotten away from 500+ watt desktops as the standard for light non-gaming computing has been a win in the energy consumption court.
I think there are lots of good reasons to avoid the upgrade cycle but energy consumption of the end device itself probably isn't it. (Embodied energy of the devices, environmental impacts of mining, no good EOL story for ewaste, etc)
Having gotten away from 500+ watt desktops as the standard for light non-gaming computing has been a win in the energy consumption court.
I think there are lots of good reasons to avoid the upgrade cycle but energy consumption of the end device itself probably isn't it. (Embodied energy of the devices, environmental impacts of mining, no good EOL story for ewaste, etc)