Installation failed with message Failed to establish session. It is possible that this issue is resolved by uninstalling an existing version of the apk if it is present, and then re-installing. WARNING: Uninstalling will remove the application data! Do you want to uninstall the existing application?
DELETE_FAILED_INTERNAL_ERROR
Error while Installing APKs
原因：
是因爲MIUI開發者選項中開啓了MIUI優化。
解決：
關閉MIUI開發者選項中的MIUI優化並重啓！
在設置->更多設置->開發者選項->USB安裝（打開）+啓動MIUI優化(關閉)