Specifically store that opens on Sunday, sells ilford FP4 and close to Sultan Ahmet. I see Seftali Analog that seems to be a good store but they close on Sunday.
Silly me I left my films in the fridge which is start to become a bad habit.
Thank you but your suggestion shows business hours as :
My flight was on Tuesday so I managed to get some rolls from a shop in Sirkeci and Fuji Film in Kadikoy on Monday.
Conclusion is NO camera shops in Istanbul open on Sunday.