"Another common mistake iPhone users make is leaving all of their apps open. When you stop using an app without closing is afterwards, the app sits in the backg

"Another common mistake iPhone users make is leaving all of their apps open. When you stop using an app without closing is afterwards, the app sits in the background and uses up a small portion of your iPhone’s processing power." This is entirely false. In fact, closing apps takes more power than leaving them running in the background. This is common knowledge amongst iOS developers.