gistfile1.txt

<div class="col-sm-12">
            <div class="form-group">
                <label for="value">Meus números</label>
                <select class="input" id="my_number" required="true">
                  	<option value="(11) 9555-25181" data-operator="2">Meu Oi</option>
                                        <option value="(11) 9855-25323" data-operator="1">Meu TIM</option>
                                        <option value="(11) 9499-57797" data-operator="1">Meu numero da tim</option>
                                    </select>
            </div>
        </div>
 
 
    <div class="col-sm-6">
        <div class="form-group">
            <label for="value">Operadora</label>
            <select class="input select-operator" name="operator" required="true">
                                    <option value="1">Tim</option>
                                    <option value="2" selected="">Oi</option>
                                    <option value="3">Vivo</option>
                                    <option value="4">Claro</option>
                            </select>
        </div>
    </div>
 
 
$(document).on('change', '#my_number', function () {
        var operator = $(this).find(':selected').attr('data-operator');
        var number = $(this).val();
 
        $(".select-operator option").removeAttr('selected');
        $('.select-operator').find('option:contains("' + operator + '")').prop('selected', true);
        $(".cell-phone").val(number);
    });