Convert Rows Into Columns

Below is the schema of a table:

TableName : PropertyValue

Columns: PropertyID Number
Value varchar
ValueID Number
Phone Number

Requirement: Create a view based on the table"PropertValue'. There could be 4 different PropertyIDs for each phone.

e.g.
PropertyID Value ValueID Phone
1 'xyz' null 1234
2 null 11 1234
3 null 12 1234
4 null 13 1234
1 'pqr' null 5678
2 null 14 5678
3 null 15 5678
4 null 16 5678

Required View:

Phone Attrib1 Attrib2 Attrib3 Attrib4
1234 'xyz' 11 12 13
5678 'pqr' 14 15 16

I tried creating the required view using 'CASE' statement and group by but its returning multiple rows.

select case when PropertyID=1 then VALUE end as Attrib1,
case when PropertyID=2 then ValueID end as Attrib2,
case when PropertyID=3 then ValueID end as Attrib3
case when PropertyID=4 then ValueID end as Attrib4
from (
select Phone, PropertyID, ValueID,Value
from PropertyValue
group by Phone, PropertyID, ValueID,Value
)