+1 Smartphone is a universal addiction as opposed to cigarette smoking. If we do not do something about this, our future humans will walk around with stiff necks as this will be coded into our DNA and we will evolve accordingly.
It should be fun to look at the data after a few weeks of logging via a free app.
https://play.google.com/store/apps/details?id=com.a0soft.gph...
I noticed it has 'Export to csv' functionality, which is convenient. But I haven't yet verified that it works.
For most people, that's bad posture deviating from a more neutral head, so isn't genetic.