Form field getting focused automatically

Hi Team,

The last field of the form getting focused automatically when the page content overlaps the screen height. This issue exist only in ios (tested in iphone 6 and emulator), for android its working fine.

Ionic info:
@ionic/cli-utils : 1.19.2
ionic (Ionic CLI) : 3.20.0
cordova (Cordova CLI) : 8.0.0
@ionic/app-scripts : 1.3.6
Cordova Platforms : none
Ionic Framework : ionic-angular 3.1.0