Function of Small Holes on the Top and Bottom of the Phone
Have you ever noticed a small hole on the top or bottom of your phone? Many people may think that these holes are just design details, but they actually have a very important function. Here is an explanation of the function of these small holes..png)
1. Small Hole on the Top of the Phone
The small hole on the top of the phone has several functions depending on the design and brand of the phone you are using. Here is the explanation:
a. Secondary Microphone
On most modern phones, the small hole on the top functions as a secondary microphone. This microphone is usually used to:
- Improve call quality: The secondary microphone helps reduce background noise while you are on a call. This technology is known as *noise cancellation*.
- Video recording: When you record a video, the secondary microphone captures sound from a certain direction to create better stereo audio quality.
b. SIM Ejector Hole
On some phones, the small hole on the top is not a microphone, but a hole to open the SIM card or memory card tray (SIM tray). This hole allows you to remove the SIM card or microSD card using the ejector tool provided when you buy the phone.
2. Small Hole at the Bottom of the Phone
Like the hole at the top, the small hole at the bottom also has different functions depending on the model and brand of the phone.
a. Primary Microphone
The small hole at the bottom usually functions as the primary microphone. This microphone is an important component for:
- Voice calls: The primary microphone captures your voice during calls.
- Voice assistants: When using a voice assistant like Google Assistant or Siri, this primary microphone is what captures your commands.
- Audio and video recording: This microphone also plays a role in recording sound for applications like the camera or voice recorder.
b. Speaker Holes
If the holes at the bottom of your phone are in a row of small ones, they are most likely speaker holes. The function of these speakers is to:
- Produce sound: Good for notifications, calls, music, and videos.
- Stereo sound: On some phones with stereo speakers, these holes work together with the speakers on the top to provide a richer audio experience.
c. SIM Ejector Hole
Like the top, some phones place the SIM tray ejector hole at the bottom. This design depends on the internal layout of the phone's components.
How to Distinguish the Function of the Holes?
To find out the function of the small holes on your phone, you can check the official specifications of the device or try certain features. Some easy signs to spot:
- The microphone hole is usually small and located next to the charging port or headphone jack.
- The SIM ejector hole is usually the same size as the SIM ejector needle. When pressed with an ejector tool, the SIM tray will pop out.
- The speaker holes are usually more numerous and neatly arranged in a row.
end
The small holes at the top and bottom of the phone may seem trivial, but they play a very important role in supporting various phone functions. The primary and secondary microphones, SIM ejector holes, and speaker holes are all designed to provide an optimal user experience. So, if you see these holes, make sure not to cover them so that the phone can work optimally.