When I use my Apple smart battery case, It charges my phone and keeps it at 100% when the screen is on and i'm using it, but when it sleeps, the case stops charging the phone after 10-15 of no usage even though there's still charge in the case. I have to disconnect the case and reconnect it in order to get it to resume charging, but the same thing happens again after 10-15 minutes. I've tried rebooting my phone but the issue still happens. Is anyone experiencing this issue? This is my third battery case I've gotten thinking it was an hardware defect.