EdwinLee_1708 Green tint is a normal thing itself by the display technology.
That’s been an ‘issue’ since the (2a), well, since we have an AMOLED screen, the pixels don’t know how to react so certain colours, example #030303. The screen doesn’t know if turn off the pixels or keep them on. It’s just an explanation.
This could be mitigated partially with colour calibration but it’s not like a 100% fix. There’s a lot of devices that suffer this issue related with LTPS since the device has less control over the display, in difference with LTPO with PWM technology.