March 31 is the official launch date of the iPhone SE of the Bank of China, and many subscribers have got their favorite phones. But after the happiness, it was reported on the Internet that the iPhone SE in their hands had a local or global yellowing problem (more obvious around the screen), and even said that it was yellowed than the iPhone 5s. Apple has added NightShift eye protection mode in ios 9.3 system to protect eyes by adjusting the blue light transmission ratio. The intuitive effect is that the screen color turns yellow. According to the reply, when the NightShift eye protection mode is not enabled, the iPhone SE screen still has the problem of yellowing. Although it is not sure whether it is an individual problem or a batch problem, I suggest that if you really find that your phone is in such a situation, please try to return it within the three guarantee period.