No matter how advanced and multipurpose smartphones become with time, their core function will remain the same; communication and keeping in touch. Then, it also remains no hidden fact that, at least for the foreseeable future, voice calls and SMS messages are not going anywhere, either. On that note, since you’re note always looking at your phone’s screen (hardly anyone ever is), it’s imperative that the device alerts you to the presence of new items that need your attention and addressing, and for that reason, we have notifications – ringer alerts, message tones, LED flashes, vibrations et al – which let us know when our smartphone has new notifications that need to be catered to.