Question: List 5 device models that users use to install the app and are active in using the app.
SQL: SELECT T1.device_model FROM phone_brand_device_model2 AS T1 INNER JOIN events AS T2 ON T1.device_id = T2.event_id INNER JOIN app_events AS T3 ON T2.event_id = T3.event_id WHERE T3.is_active = 1 AND T3.is_installed = 1 LIMIT 5