Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE phone (Accreditation_level VARCHAR)

### Question ###
Find the accreditation level that more than 3 phones use.

### Accurate SQL ###

SELECT Accreditation_level FROM phone GROUP BY Accreditation_level HAVING COUNT(*) > 3