Why doesn't Xiaomi mobile phone have earphone holes?

Because it may not be designed, my mobile phone is like this, but I didn't design this earphone hole for you, so I may either buy an adapter or this earphone with Bluetooth. Anyway, I just don't want to use it for you. The following is a supplement about headphones.

classify

According to the frequency of electromagnetic waves used by wireless headphones, it can be divided into:

Infrared (30um ~ 3mm10ghz ~1000ghz) wireless headset.

Mibo (Mibo10 ~1MVHF 30 MHz ~ 300 MHz) wireless headset

Decimeter wave (decimeter wave1m ~ 0.1m UHF 300 MHz ~ 3000 MHz) wireless headset

I. infrared wireless headphone

Advantages: At present, the technology is quite mature.

Disadvantages: 1, working distance within 7 meters; 2. Diffraction difference. If there are obvious obstacles (such as people and large pets) between infrared wireless headphone and the transmitter, the reception of infrared headphones may be interrupted.

2. Mibo wireless headset ("FM headset")

Advantages: 1 Theoretically, N receivers in the working range can listen at the same time, which is a one-to-many wireless audio broadcasting system. 2. The signal has strong diffraction; 3. The service distance is nominally between10m and 70m.

Disadvantages: 1, virtual standard working distance; 2, the noise interference is large; 3. The signal reception is unstable.

Third, decimeter wave wireless headset (Bluetooth)

Advantages: 1, working distance (100 m), more free working space; 2. Good music playing effect; 3. The confidentiality of communication is relatively strong; 4, the sound quality is better; 5, more energy-saving; 6. The cost is lower.

Functional characteristics

1, with wireless transmission, wireless monitoring, wireless voice chat and other functions;

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The latest wireless headset

2. With a professional learning program, you can learn the functions of various home appliance remote controllers (TV, VCR, DVB, DVD, etc.). ), and can also be used as a digital set-top box remote controller. 2. You can listen to most electrical appliances with audio output wirelessly. 3. Using wireless headphones, you can enjoy wonderful programs freely when the TV is silent. 4. Put the transmitter next to the elderly, babies, patients and other people who need care, and use the receiver to hear the voice of the person being cared for, which is convenient and easy to take care of. 5. Adopt the original imported launch tube and core technology, with high sensitivity, anti-interference, super signal, outstanding effect, effective range (less than) 30 meters, and can be received by partition walls.