Do I need to quit?

Mac Format - - APPLETALK -

Please help me set­tle an ar­gu­ment. My friend has an an­noy­ing habit of man­u­ally killing apps on his iPhone. He claims that this frees up mem­ory. I have tried to tell him that iOS doesn’t re­ally mul­ti­task and ‘back­ground’ apps are sus­pended and will be un­loaded au­to­mat­i­cally when the iPhone needs the mem­ory for some­thing else, but he doesn’t seem to be­lieve me. We have both tried Googling to prove our point, but haven’t found any­thing com­pletely de­fin­i­tive… Alas­tair Per­ci­val You’re both partly right. Up to and in­clud­ing iOS 6, you were com­pletely right. Back­ground apps weren’t do­ing any­thing and could be kicked out of mem­ory by iOS at a mo­ment’s no­tice. But when iOS 7 came along, the mul­ti­task­ing sys­tem was changed. Apps are now al­lowed to run some very limited code in the back­ground to fetch data – even when that app is sus­pended. And servers can send push no­ti­fi­ca­tions that will wake a sus­pended app. This uses hardly any CPU power, but it makes apps ap­pear to run in the back­ground. Killing sus­pended apps in iOS 7 still doesn’t save mem­ory, be­cause apps will still be au­to­mat­i­cally un­loaded as needed, even if they are re­ceiv­ing back­ground no­ti­fi­ca­tions. But it will save a very small amount of bat­tery power. At the ex­pense of pos­si­bly miss­ing no­ti­fi­ca­tions un­til you next open that app.

Newspapers in English

Newspapers from Australia

© PressReader. All rights reserved.