Contact list issue

Ionic Framework ionic-v3
1

i want to fetch all contact list into my app.but showing some contact.but i want all contacts.
and Various devices are showing different.like my contact list showing 20 and my friends contact list
5 how can i fix it.
.ts

  	 this.platform.ready().then(() => {
       var opts = {   
          ///filter : "M",                                
          multiple: true,        
          hasPhoneNumber:true,                             
          fields:  [ 'displayName', 'name' ]
        };
        this.contacts.find([ 'displayName', 'name' ],opts).then((contacts) => {
          this.contactlist=contacts;
        }, (error) => {
          console.log(error);
        })
    })

HTMl

<ion-list>
    <span *ngFor="let contact of contactlist" >
      <ion-item *ngIf="contact.displayName">
          {{contact.displayName}} = {{contact.phoneNumbers[0].value}}
      </ion-item>
    </span>
  </ion-list>

please helpme anyone.