This is crucial. Look for an XML file specifically named "Huawei_Y9A_v4.xml" or similar. This file tells GCAM which lenses to use (main, ultrawide) and prevents crashes.
Go to Settings > Security > More Settings > Install apps from external source and allow your browser or file manager. gcam huawei y9a better
Stop settling for mediocre stock processing. Download GCAM today and see the light. Disclaimer: GCAM is a ported application not officially supported by Huawei or Google. Use at your own risk. Always scan APK files for malware before installation. This is crucial