Why Earphone is Required to Play FM Radio on Smartphone?

When we listen to FM radio on our mobile phone, why do we have to install an earphone, why can't we listen to FM radio without it?

First of all, let's talk about how the earphone works on the phone? The FM radio that is working on your phone is not just the application, it is not that if you give the application pulses of any phone, the application will come in it. Earlier there used to be such phones which did not have FM. I am talking about Nokia's Black and White phones, but later on, Nokia started giving FM to all small and big phones. But the Nokia 1100 that came earlier did not have FM radio, which meant that it did not have the hardware that could play FM radio. So from this, want to tell you the FM radio that runs in smartphones is not just an application, it is a combination of hardware and application. Right now most of the mobile phones you keep are seen in all of them. To run FM, a chip is required which is nowadays in every phone.

The most important thing to run FM is signal reception. How will you listen to the radio if the signal does not catch the radio station? Even if you do not have an antenna in normal radio, the radio will not work. Now I am not talking about places like Delhi, because there is a very good signal reception. But talking about a place where the radio station is far away, then you will need an antenna, the larger the antenna, the better the signal you will get. So what is the name of the antenna on your mobile phone? I am not talking about the earlier mobile phones in which a very large antenna used to come. If you had a mobile phone with an antenna, you would not need to install an earphone. But the modern-day mobile phones have an antenna, it is very small like a chip. And he did not have so many antennas that he could catch the frequency of the radio. It is made to catch bands like GSM. That is why an external antenna will be needed to run FM radio, now no company will give an external antenna, in view of this, they did two in one work, which is your headphone jack, by selecting a point in the radio Made the antenna. This means that whenever you connect your earphone, it acts like an antenna, which catches the radio signal and then you get the radio. 

The most important thing for radio is signal reception, which is not possible with the normal phone antenna range. But we can catch the radio signal with an antenna up to 90 cm long that's why Earphone is Required to Play FM Radio on Smartphone. 

Now many people remove the pin of the earphone and adjust the copper wire in it, it may cause the earphone to be bad, but it can be a good way to take more signal in an emergency.