hi guys all you have to do is , take that beautifull iphone 8 or 8 plus thats currently suffering from no true tone display feature in setting
connect it to your computer or macbook
put the iphone in itunes download mode im sure you know what i mean
and click restore ios on your computer that has itunes oh yeah back your $@$* up first
the once you restore the OS when setting up the phone you will even see the true tone display option as you set it up
make sure before doing all of this you backup all the kaka on your phone and remove find my iphone and sign out then boom it will work like wonder bread