That was over 5 years ago in 2016.
Today he is 31, and has starred in 13 movies in total, 2 since The Man Who Knew Infinity was released.
In The Man Who Knew Infinity, I think Dev Patel looks:
The Man Who Knew Infinity scores 7.1 out of 10 on The Movie Database.
Dev Patel's first acting role was as 'Jamal Malik' in Slumdog Millionaire, released in 2008 when he was 18.