bpow77 wrote:
Let me try and clarify this...
Before the iOS 9 update, when you turned your phone off and then turned it back on no apps were open. If you double tapped the home button there would be no apps open in the background because no apps had been used, because the phone had just started up.
Absolutely wrong. Before iOS 9, when you turned your phone off, then on again, the same apps that were displayed in the Quick Launch screen when you shut it off would still be displayed when you turned it back on. Likewise if you rebooted the phone. I know, I've been doing this cycle for over 8 years. And my 100 plus apps were there both before and after the power cycle. So if you are basing your "issue" on this it is a non-issue. Just to make sure I hadn't misremembered, I took my wife's 3GS running 6.1.6, checked which apps were listed, turned to phone off, then turned it back on and the same apps were still displayed in the Quick Launch ribbon. On my 4S and 6 I regularly turn them off, and when I turn them on the same apps are displayed. This was true in iOS 7 on the 4S, and iOS 8 on the 6.
If I misinterpreted what you said, and you really meant that you closed all of the apps before powering off, that's a different situation. Keep in mind that an app that shows in the screen when you double-press the HOME button is not running, and may not even be in memory. As the phone has only 1 GB RAM only a few apps can actually be in memory. So of the 120 apps that I can scroll through probably only 4 or 5 are actually in RAM. The rest have been flushed from memory, and only their ghost is displayed. And also keep in mind that even if an app does not appear when you double-press the HOME button that does not mean it is not running. Apps can run in background even if they don't appear when you double-press HOME. Or at least they could in the past.
Given that, I see what you are observing. After I flush all apps and power cycle the phone, if I double-press HOME immediately I don't see any apps. However, If I wait a minute before pressing I see Settings, Photo, Camera, Calendar, Phone, Music, App Store, Mail, Clock, Safari, Messages, Contacts, and Reminders. What all of these apps have in common is a background process that syncs them with iCloud or other Internet services. These apps have always had background processes since the beginning of iPhone time in 2007 (or since they were added to iOS). I suspect that the reason you see them is iOS 9 has been changed to show you what has actually been running in background all the time. Before iOS 9 they would be launched, but you wouldn't see them until you actually opened the app. Now with iOS 9 it is telling you what apps have been launched in background. So it is giving you more information than you had with earlier versions. It is not suddenly starting apps that had never been launched in earlier versions, just telling you more than you knew with earlier versions. And BTW, there's no point in killing any of them; they will still continue to wait in background for notifications.