When Fu Hongxing delivered the news, Ning Jing was completely stunned!
In her world, the country's technological development was not nearly as rapid.
Mobile phones should only be developing in the countries on the other side of the road, and not many people should be using them yet.
After all, in her world, today's mobile phones are limited by battery capacity, and the development of analog modulation technology requires large antennas and integrated circuits, etc. These collections are square in appearance and are called "bricks" by many people.
These mobile phones come in various standards, but they basically use frequency division multiplexing and can only be used for voice communication. Moreover, the reception is not very stable, and most importantly, the security is insufficient, and the wireless bandwidth is not fully utilized.
It's essentially a simple full-duplex radio; as long as the call is locked to a certain frequency, you can use an FM radio to hear other people's conversations.
Even so, Ning Jing was still shocked.
After all, the person who invented this mobile phone was her son, and so many years ahead of time, which was something she never expected.
That same afternoon after receiving the call, Ning Jing set off for Shenzhen.
She was determined to see for herself whether the mobile phone Xiang Nan had developed was the "brick" phone she remembered.
Fu Hongxing, who came to pick up Ning Jing, was also very excited.
The invention of the mobile phone proves that technology has taken a giant leap forward.
Moreover, with this, many places will become very convenient.
For example, even when traveling, people can find each other and talk to each other anytime, anywhere.
What an exciting achievement this will be!
Fu Hongxing took his wife, who had just gotten off the train, straight to his son's company. As soon as they entered, they saw the three of them sitting dejectedly in chairs, looking utterly disappointed.
"What...what happened?"
When Fu Hongxing and Ning Jing entered and saw this scene, their excited hearts suddenly skipped a beat.
Ning Jing ignored everything else and walked straight to Fu Xiangnan, patted his head, and asked softly.
Fu Xiangnan, who had been looking dejected, suddenly looked up when he heard Ning Jing's voice.
"Mom, I...failed!"
Upon hearing her son's words, Ning Jing was taken aback at first, then looked away.
On the table was a mobile phone, about the size of a brick, very similar to the old-fashioned brick phone she remembered.
Her heart started pounding. Although it looked old-fashioned, it was still a cell phone!
Fu Hongxing had already asked Fu Hongwei and Fu Xiuli about the whole story, so it wasn't really a failure.
However, the signal range of this mobile phone is really poor.
Once a certain distance is reached, the signal will be lost, rendering the mobile phone practically useless.
To ensure a constant signal connection, the distance between each base station would need to be very dense.
In that case, the investment would be enormous. Not to mention the huge cost of making a single phone call, the cost of manufacturing a mobile phone is already considerable. For ordinary people, spending so much money on something that doesn't even guarantee a signal is practically useless.
This realization was a huge blow to Fu Xiangnan and his team.
After all, manufacturing this mobile phone had already cost all the money the three of them had.
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