Another bug too. While charging your phone overnight, sometimes there is this 'system memory reset log' which purges all apps running in memory. issue still there in 9.2.1
Another bug too. While charging your phone overnight, sometimes there is this 'system memory reset log' which purges all apps running in memory. issue still there in 9.2.1
Apps that use/require large amounts of memory have no choice but to purge the background apps. Don't expect that to be "fixed" simply because its not broken, just an unfortunately consequence of how iOS (and other mobile OS's) work. It gets better with newer devices that have more RAM but its always going to be an "issue".