DeLoitte:

Mobile usage habits form the device etiquette

Survey results show that usage habits are maturing and becoming better defined leading to a naturally developed device etiquette. Overall, the number of times users look at their phones has remained nearly constant for the past three years at approximately 47 times per day. Similarly, 89 percent of consumers looked at their phones within an hour of waking up, a yearly increase of only one percent. Before going to sleep 81 percent looked at their phones within an hour, consistent with 2016.