Certificate issue


i have one issue related to my application (Ionic 4), i already generated apk file and it works fine in emulator, and i already use https to call my backend apis and securing my backend with SSL certificate.

the problem is, when i install the apk manually in some devices, it doesn’t connect to backend until i install the backend certificate manually in the device !

i have no idea why i faced this issue only in a specific devices in android and never face in ios and how to resolve ?!


My first instinct is that you may have forgotten to include sufficient intermediate certificates on your server.