xconnect.cs

var contactReference = this.contactIdentificationRepository.GetContactReference();

using (var client = this.contactIdentificationRepository.CreateContext())
{
    var facetsToGet = new List<string>
    {
        AddressList.DefaultFacetKey,
        EmailAddressList.DefaultFacetKey,
        PhoneNumberList.DefaultFacetKey,
        PersonalInformation.DefaultFacetKey
    };

    var contact = client.Get(contactReference, new ContactExpandOptions(facetsToGet.ToArray()));

    if (contact != null)
    {
        /// facet work

        client.Submit();
        contactFacetsProvider.UpdateTracker();
    }