iphone 8 plus wotks but has a darken screen
i have an iPhone 8, 2 years old, and today the screen lost most of the backlight. You can just see items On the screen through the gloom! Tried a hard reboot - no go, plugged it in to the charger (even though the battery had 90% charge from an overnight charge) and the backlight showed up again. Took it off the charger and it retained the backlight for a short time then did the same thing. Any idea if the cause and possible solutions for this please?
iPhone 8 Plus