Hole Next to iPhone Camera
Every smartphone, starting with the iPhone 5, has three microphones. One is hidden under the speaker grill, another is above the camera lens, and a third is on the bottom edge of the handset. The three microphones allow you to pick up sounds regardless of how you hold your phone, which is beneficial if you use speech recognition. When recording video with sound on your iPhone, the third microphone next to your lens is also crucial.
Zigzag Side of Bobby Pin
You’ve always noticed that one side of a bobby pin is straight and the other is wavy, even though you’ve never used one. The zigzag pattern on the side facing the scalp is generally overlooked. Of course, in this way, it can seem to be a little cooler. The wavy side, on the other hand, helps hold the pin in place during the day by capturing the big clump of hair. Only the wavy side of the bobby pin is visible when it is not in use.