APK fails on certain systems: App not installed

I have an Ionic app designed and installed in my device, when I try installing another ionic app which was designed newly I am getting ā€œApp not Installedā€ message.

I have changed widget id in config.xml and also changed in manifest.xml as well. But no luck. Any help on this?

Thank you, works fine with me when i uninstall all the other test app i’ve developped with ionic