SELECT Accreditation_level FROM phone GROUP BY Accreditation_level HAVING count(*)  >  3
Find the accreditation level that more than 3 phones use.
SELECT Accreditation_level FROM phone GROUP BY Accreditation_level HAVING count ( * ) > 3
select accreditation_level from phone group by accreditation_level having count ( * ) > value
Find the accreditation level that more than 3 phones use .