Installation failed with the following output: pkg: /data/local/tmp/Package.apk Failure [INSTALL_FAILED_OLDER_SDK] 5425 KB/s (37903430 bytes in 6.822s) UnityEditor.HostView:OnGUI()

Please help me solve this issue…

Actually you are trying to install an APK with high level API into a low level API device …

Lower your minimum API level to something that suits your device Edit >> Project Settings >> Player >> Other Settings >> Minimum API