Iphone Battery Usage Not Showing Last 7 Days. Usage and standy time is showing its just which app is consuming how much battery and last 7 days battery app not showing. These steps are also shown below with pictures Step 1.

The phone would charge to 100 without any issues. Go to Show Detailed Usage. While looking at the Last 7 Days tab make sure the number of hours for on screen is relatively the same as the number of hours in the background.
Restoring an iphone can be annoying since it takes time but its worth it.
Since my iphone had some other problems too it restarted on its own once or twice a day for example i decided to restore it and although i am not sure if it fixed the restarting issue it did fix the battery usage not showing. Then you will find the Battery Usage feature and some apps and services. Battery health shows 100. Restoring an iphone can be annoying since it takes time but its worth it.

