Write SQL query to solve given problem: Please list the time when event no.2 happened on a vivo device.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.timestamp FROM events AS T1 INNER JOIN phone_brand_device_model2 AS T2 ON T1.event_id = T2.device_id WHERE T2.phone_brand = 'vivo' AND T1.event_id = '2'