We have to use Microsoft Authenticator to access Teams. I have installed Authenticator on both my iPhones. The installation on my iPhone XR allows me to enable and disable the Background App Refresh setting. The installation on my iPhone SE enables Background App Refresh and does not allow me to disable it, the setting is enabled permanently. Why are the installations different? I want to disable the background app refresh on the SE because I am getting excessive battery drain which stops when I delete the app.
