Android Platform INPUT is not working

Hello guys . i use the ionic 2. Browser is not problem. Input clickable then ngmodel is reading. But I build android platform. I try the click input. But not clickable.

Then app.scss write in .input-cover {display:none !important; } this is working. But ngmodel is not reading. I DON’T UNDERSTAND!!! Really I was work 2 days at problem. Please help me.

@ionic/cli-utils : 1.19.0
ionic (Ionic CLI) : 3.19.0
global packages:

cordova (Cordova CLI) : 8.0.0
local packages:

@ionic/app-scripts : 3.1.6
Cordova Platforms : android 5.1.1
Ionic Framework : ionic-angular 3.9.0

Node : v6.12.2
npm : 3.10.10
OS : macOS High Sierra
Xcode : Xcode 9.2 Build version 9C40b

In your code, are you using ngmodel (small m) like you wrote here? It should be ngModel