Pre-populate Field Values on Standard Pages in Lightning

SK_PrepopulateFieldsDemo.cmp

<aura:component implements="force:appHostable,flexipage:availableForRecordHome,force:hasRecordId" >
    <lightning:button name="Create Quick Contact" label="Create Quick Contact" onclick="{!c.createQuickContact}"/>
</aura:component>

SK_PrepopulateFieldsDemoController.js

({
    createQuickContact : function(component, event, helper) {
        var createAcountContactEvent = $A.get("e.force:createRecord");
        var accid=component.get("v.recordId");
        console.log('accid-'+accid);
        createAcountContactEvent.setParams({
            "entityApiName": "Contact",
            "recordTypeId":'0120I000000nhJFQAY',
            "defaultFieldValues": {
                'Phone' : '415-240-6590',
                'AccountId' : accid,
                'Email':'dummytest123@gmail.com'
            }
        });
        createAcountContactEvent.fire();
    }
})