CONFIG += mobility
    MOBILITY += contacts

    symbian: {
        TARGET.CAPABILITY = ReadUserData WriteUserData
    }

    #include <QContact>
    #include <QContactManager>
    #include <QObject>
    #include <QString><br>
    // Qt Mobility namespace declaration
    QTM_USE_NAMESPACE;<br><br>
    class MyContactsHandler : public QObject
    {
        Q_OBJECT<br>
    public:
        MyContactsHandler(QObject *parent = 0);
        virtual ~MyContactsHandler();<br>
    public:
        bool addGroup();
        bool addContactsToGroup();
        bool getContactsFromGroup(int index, QContactId &groupId, QContactId &memberId);
        QString nameField(QString aContactType);<br>
    private: // Data
        QContactManager *m_manager;
        QContact m_contactGroup;
    };

    #include "contacthandler.h"
    #include <QContactName>
    #include <QContactPhoneNumber>
    /*!
      Constructor.
    */
    MyContactsHandler::MyContactsHandler(QObject *parent /* = 0 */)
        : QObject(parent),
          m_manager(0)
    {
        m_manger = new QContactManager(this);
    }
    /*!
      Destructor.
    */
    MyContactsHandler::~MyContactsHandler()
    {
     delete m_manager;
    }
 
First, create the contact group.
 
    /*!
      This method is used to add a new contact group in the phone book.
    */
    bool MyContactsHandler::addGroup()
    {
        m_contactGroup.setType(QContactType::TypeGroup);
        QString saveNameField = nameField(QContactType::TypeGroup);
        QContactName name = m_contactGroup.detail(QContactName::DefinitionName);
        name.setValue(saveNameField, "testGroupContact1");
        m_contactGroup.saveDetail(&name);
        m_contactGroup = m_manager->compatibleContact(m_contactGroup);
        return m_manager->saveContact(&m_contactGroup);
    }
 
After creating the contact group, add the contacts to the created group.
 
    /*!
      This method demonstrates how to add contacts into the created contact group.
    */
    bool MyContactsHandler::addContactsToGroup()
    {
        // Add one test contact to phonebook.
        QContact testContact;
        QString saveNameField = nameField(QContactType::TypeContact);<br>       
        if (!saveNameField.isEmpty()) {
            QContactName name = testContact.detail(QContactName::DefinitionName);
            name.setValue(saveNameField, "TestContact1");
            name.setLastName("Last");
            testContact.saveDetail(&name);
        }<br>
        QContactPhoneNumber phoneNumber = 
            testContact.detail(QContactPhoneNumber::DefinitionName);
        phoneNumber.setNumber("9999999999");
        testContact.saveDetail(&phoneNumber);
        testContact = m_manager->compatibleContact(testContact);
        bool success = m_manager->saveContact(&testContact);<br>
        // Create and save the group relationship.
        QContactRelationship groupRelationship;
        groupRelationship.setFirst(m_contactGroup.id());
        groupRelationship.setRelationshipType(QContactRelationship::HasMember);
        groupRelationship.setSecond(testContact.id());<br>
        return m_manager->saveRelationship(&groupRelationship);
    }
 
After adding the contacts to the created group, retrieve the contacts from the group.
 
    /*!
      This method demonstrates how to retrieve contacts from the created 
      contact group.
    */
    bool MyContactsHandler::getContactsFromGroup(int index, QContactId 
                                              &groupId, QContactId &memberId)
    {
        QList<QContactRelationship> relationshipList;
        QContactRelationship relItem;
        relationshipList = m_manager->relationships(m_contactGroup.id());<br>
        if (index < relationshipList.count()) {
            relItem =  relationshipList.at(index);
            groupId = relItem.first();
            memberId = relItem.second(); 
            return true;
        }<br>
        // No contact found with the given index!
        return false;
    }	
 
Utility method:
 
    /*!
      This method is used to get the field part for contact/contact group.
    */
    QString MyContactsHandler::nameField(QString aContactType)
    {
        QMap<QString, QContactDetailDefinition> defs =
            m_manager->detailDefinitions(aContactType);
        QContactDetailDefinition nameDef =
            defs.value(QContactName::DefinitionName);<br>
        if (nameDef.fields().keys().contains(QContactName::FieldCustomLabel)) {
            return QString(QLatin1String(QContactName::FieldCustomLabel));
        }
        else if (nameDef.fields().keys().contains(QContactName::FieldFirstName)) {
            return QString(QLatin1String(QContactName::FieldFirstName));
        }<br>
        // Not found!
        return QString(); 
    }