I'm developing an android app using ionic, I created a new app with side menu , when i run the app icons appear in the web browser and in simulator but don't appear in the my android device (oppo A5s cph1909 with color os5.2.1) i also tried with other mobiles like samsung and other oppo it works fine .i also tried before an svg image i got a bad structured image in the android device (oppo A5s).

Any idea?