Joke Collection Website - Public benefit messages - What are the two marks that appear in the upper right corner of my phone? One is like eyes, and the other is the letters HD. What do they mean?

What are the two marks that appear in the upper right corner of my phone? One is like eyes, and the other is the letters HD. What do they mean?

The handset HD icon indicates that the VOLED mode is turned on. This mode enhances the call clarity under 4G, and you can use mobile data to access the Internet while talking. Go to Settings - Phone - Turn on the VOLTE voice call function. Set the switch (different systems are slightly different). If the sim card supports this function, it is recommended to turn it on (of course it is useless if the other party does not have this function)

The eye icon is eye protection mode, the display settings in the settings There should be this switch