Smart battery case
I have a smart battery case and an iphone 7. They used to both work fine. Now all of a sudden the phone battery is running out and the battery case remains fully charged. Why is the battery case not charging the phone? I have to fool with it, like pull the phone out and push it back in or shut it off and turn it back on, stuff like that, then the phone finally starts to pull the charge from the case. It's temperamental. What would cause this? But the phone always runs out first and THEN I have to mess with it to get the battery case to start working. I thought the case's charge was supposed to be used up first.
iPhone 7, iOS 14