How do you track what time call forwarding was turned on and off?

To track when call forwarding was turned on and off, you can check the call logs or settings history in your phone's call management app or settings menu. Many mobile carriers also provide a detailed account of call forwarding actions in their online account management tools. Additionally, some smartphones may send notifications or logs related to changes in call settings, which can also serve as a record. If available, you can also consult your carrier's customer support for specific timestamps.