No wonder that black spots on the surface of your phone is what?

At the top of a telephone number they see a black dot or two near the camera for photographer Selfie. There is a small number of users seem not interested from these black dots do not know them What role.

Those black spots is a Proximity Sensor with it when there's something close to it. In this type of sensor on the phone running it off the phone screen when the phone is next to face . As it can help keep a person's cheeks touching another button on the screen randomly when talking telephone others.

Apart from the current can disable the phone screen Proximity Sensor can also meet a number of intelligent functions such as telephone set to Silent Mode face or telephone Speaker automatically when the phone away from the ear when talking telephone.

In the coming days, they believe that the Proximity Sensor will be able to fulfill many other features to facilitate daily use.

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Updated: Hay Sok Heng
Source: Mashable