Since upgrading to iOS 11, I've noticed that apps running in the background are closed much more aggressively.
Two specific cases that are especially frustrating:
Google Maps, which was in the middle of routing me, was closed and I almost missed my exit because it didn't give me a notification.
WhatsApp is frequently closed, which stops notifications from showing up on the desktop app.
Is there anything I can do to prevent iOS from closing these apps?
(and for completeness: "background app refresh" is enabled for these apps, and this is on an iPhone 6)