@nerthos @hector I use Android's "priority mode", which makes the phone completely silent unless there's a call from a whitelisted contact. Notifications for e-mails and instant messages are completely turned off - I check them when I feel like it.

I really hate the expectation of constant availability and immediate responses that many seem to have. People have been really rude to me on several occasions just because I don't answer to their messages within seconds.