Mysql and Outer Joins

[Steve Weet]

I am new to mysql, but have experience of a number of other databases
and I am somewhat confused by an outer join issue.

Given the following data structure

TABLE: handset_features
Feature Description
WEIGHT Weight in Grammes
COLOUR Colour Screen
WAP Wap Enabled
BLUET Bluetooth
TABLE: model_features
Model Feature Value
NOK-3300 COLOUR YES
NOK-3300 WAP YES
NOK-7250 COLOUR YES
NOK-7250 WAP YES
NOK-7250 BLUET NO
What I wanted to achieve was for a given model to retrieve all
possible
features and the value of that feature if the value was set.
e.g. for the NOK-3300
EXPECTED RESULT:
Feature Description Value
WEIGHT Weight in Grammes <null>
COLOUR Colour Screen YES
WAP Wap Enabled YES
BLUET Bluetooth <null>

This was the SQL that I believed should do the job and indeed does on
other
database engines.

SELECT hf.description,
mf.value
FROM handset_features AS hf LEFT OUTER JOIN
model_features AS mf ON hf.feature = mf.feature
WHERE mf.model = "NOK-3300";
Unfortunately with mysql this does not work and only returns me the
rows
where a record already exists in model_features. i.e. It appears to
ignore
the outer and do a hard join. This is the result set I get back

Feature Description Value
COLOUR Colour Screen YES
WAP Wap Enabled YES
Does anyone have any ideas what I am doing wrong?