I have used phone-gap push plugin for push notification, every things works find except icon display on device. white icon is display for notification on some device
You need to add all your notification icon in below all directories
res/drawable-mdpi/ (24x24)
res/drawable-hdpi/ (36x36)
res/drawable-xhdpi/ (48x48)
res/drawable-xxhdpi/ (72x72)
res/drawable-xxxhdpi/ (96x96)
res/drawable-xxxhdpi/ (256x256)
Small Icon If you prefer to create your own icons, you must make your icons the following size and colors:
Type Size (px) Small Notification Icon (mdpi)
24x24
Small Notification Icon (hdpi)
36x36
Small Notification Icon (xhdpi)
48x48
Small Notification Icon (xxhdpi)
72x72
Small Notification Icon (xxxhdpi)
96x96
Other - Large Icon Type Size (px) Large Notification Icon (xxxhdpi)
256x256
Batter to use below tool to generate notification icon. Android Asset Studio