Ionic 3 SanitizeHtml Pipe not working

This seems to working but still can't bypass my html bypassSecurityTrustHtml

<ion-list>
 <ion-item>
   <ion-icon name="mail" item-start></ion-icon>
     contact@test.com
 </ion-item>
 <ion-item>
   <ion-icon name="call" item-start></ion-icon>
     1-800-000-0000 (Toll free)
 </ion-item>
 <ion-item>
   <ion-icon name="call" item-start></ion-icon>
     0000-6666
 </ion-item

On html page icons are missing and list view not working. any suggestion ?