Second, it should be caused by the failure of the micro switch of the earphone jack, that is, the earphone has been pulled out, but the switch has not been turned off in time.
Third, you can try to plug in the headset several times quickly to see if you can make the headset logo disappear or restart the phone.
Fourth, if it still doesn't work, it is recommended to get it checked at the after-sales outlets of mobile phones, or to replace it with a new earphone jack.
It should be caused by the failure of this microswitch, that is, the earphone has been pulled out, but the switch has not been turned off in time. You can try plugging in headphones a few times quickly and see if you can make the logo disappear. If not, it's time to change the earphone hole. The headset mode will automatically switch. There will be a mark when the earphone is plugged in.
This is because there is a small microswitch in the headphone jack. When the headset is plugged in and the switch is touched, it will switch to headset mode. If you unplug the headset and turn off the switch, the sign will be cancelled.
Data expansion:
Headphones (headphones; Headphones; Headphones; Earpieces) are a pair of conversion units, which receive the electrical signals sent by the media player or receiver and convert them into audible sound waves through the speakers close to the ears. Headphones are usually detachable from the media player and connected by a plug.
The advantage is that you can listen to the sound alone without affecting others; It can also isolate the sound of the surrounding environment, which is very helpful for people who use it in noisy environments such as recording studio, DJ, travel and sports. Headphones were originally used in telephones and radios, but with the popularity of portable electronic devices, they are mostly used in mobile phones, walkmen, radios, portable video games and digital audio players.
Judging from the development of the whole audio industry, wireless headphones are still a new thing, and the development time is not long. At present, it is still on the rise, the demand of users is constantly improving, and the expectations of users for wireless headphones are also increasing, which is a new test for the industry.
At present, users are most concerned about sound quality, battery life and wireless transmission ability. From the data point of view, the wireless transmission capacity can basically meet the needs of most users, but there is still much room for improvement in sound quality and endurance. If we start from these two points, I believe it will be easy to attract users' attention in the future.
Matters needing attention
Because headphones are closer to the inner ear tissue than general external noise; Users must take necessary protective measures. Studies have shown that good music has little damage to hearing, but long-term exposure to high-decibel sounds, whether music or noise, will cause hearing damage. Sensory nerve hearing damage caused by noise occurs in the inner ear. When high-energy sound waves impact the fluid in the cochlea, they will be over-stimulated, leading to cell death. Hearing impairment is formed over time. If you are exposed to noise for a long time, even for a short time, it will cause hearing loss.
A survey published in Journal of American Medical Association 1998 and an experiment conducted by Shanxi Medical University in China show that long-term exposure to high noise levels has a negative impact on hearing.
Using headphones in the street, in addition to hearing damage caused by increasing the volume, users are easy to lose their vigilance against external sounds and increase the chances of danger, so it is not suitable for children to use.