Today I found a weird issue. When the webview tried to load a https URL on a Huawei mobile phone, it stoped working. After debugging, I found the following error in the logs:
primary error: 5 certificate: Issued to: CN=my-site.com; Issued by: CN=GeoTrust DV SSL CA - G3,OU=Domain Validated SSL,O=GeoTrust Inc.,C=US; on URL: https://my-site.com/index.php
During a long time researching on Google, I finally found that there is a bug in webview, it happends in version 53 and 54 in Android 6, All pages served with Symantec certificates will not be loaded. This is exactly same as my issue! Link of this bug
Android system webview，安装即可。
The only solution is to ask user to upgrade there webview. Just enter to Google Play store, search
Android system webview, and install it.