Database: talkingdata
Question: Provide the phone brands and models of the users who were at the coordinates of (80,44).
SQL: SELECT DISTINCT T1.phone_brand, T1.device_model FROM phone_brand_device_model2 AS T1 INNER JOIN events AS T2 ON T2.device_id = T1.device_id WHERE T2.longitude = 80 AND T2.latitude = 44