Guideline 2.5.4 - Performance - Software Requirements
We are unable to locate any features that require persistent location. Apps that declare support for location in the UIBackgroundModes key in your Info.plist file must have features that require persistent location.
Next Steps
If your app has a feature that requires persistent location, reply to this message and let us know how to locate this feature.
If your app does not require persistent real-time location updates, please remove the "location" setting from the UIBackgroundModes key. You may wish to use the significant-change location service or the region monitoring location service if persistent real-time location updates are not required for your app features.
Privacy - Location Always Usage Description（后台APP定位）：
需要注明应用内使用后台定位的业务说明，提交审核时，也附上对应的功能业务说明即可。