Reported by @wise hamlet
Bug Report: You can’t switch between the two thinking modes in iOS
`Steps to Reproduce`
Head to the ChatGPT app and press the thinking model
`Expected Result`
There to be a menu where you can switch between the two different thinking, modes of faster and longer thinking sort of like android
`Actual Result`
There is no such thinking menu on iOS, but there is on android
`Environment`
iOS, most recent version