You don't have to quite smartphones, just disable all notifications (e.g., WhatsApp, Email, alarms, sms, etc.). Use the phone on demand, never let the phone not

You don't have to quite smartphones, just disable all notifications (e.g., WhatsApp, Email, alarms, sms, etc.). Use the phone on demand, never let the phone notify you something. That's the trick! So, for example, I usually left my phone next to my bed the whole day. At afternoon I pick it up and check messages. In the night I left my phone in the living room (I pick it up the next day). That's it. Some people have complaint that I don't answer "on time" (why should I?). I usually don't take my phone with me when going out (except if I'm going to hike and the like, in case of emergencies).