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_market ( Market_ID VARCHAR, Phone_ID VARCHAR )
TABLE: CREATE TABLE market ( Market_ID VARCHAR, Num_of_shops INTEGER )
TABLE: CREATE TABLE phone ( Name VARCHAR, Phone_ID VARCHAR )

### Question ###
Show the names of phones that are on market with number of shops greater than 50.

### Accurate SQL ###

SELECT T3.Name FROM phone_market AS T1 JOIN market AS T2 ON T1.Market_ID = T2.Market_ID JOIN phone AS T3 ON T1.Phone_ID = T3.Phone_ID WHERE T2.Num_of_shops > 50