When Fu Hongxing passed the news, Ning Jing was stunned!

In her world, the country's technology has not developed so fast at all.

Mobile phones are supposed to be just developed in countries on the other side of the foot, and not yet used by many people.

After all, in her world, today's mobile phones are limited by battery capacity, as well as the development of analog modulation technology that requires huge antennas and integrated circuits, etc., this kind of collection has a boxy appearance, and is called "bricks" by many people.

This kind of mobile phone has a variety of standards, but basically the frequency division multiplexing mode can only be used for language communication, and the effect of receiving information is not very stable, and the most important point is that the confidentiality is also insufficient, and the wireless bandwidth is not fully utilized.

It is equivalent to a simple radio duplex radio, as long as the call is locked in a certain frequency, you can use the FM radio to hear the call between others.

But even so, the tranquility was shocked.

After all, the person who researched the mobile phone this time was her son, and it was so many years earlier, which she never expected.

On the afternoon of the day he received the call, Tranquility set off for Pengcheng.

She must see with her own eyes whether the mobile phone that Xiang Nan researched is the "brick" mobile phone in her impression.

Fu Hongxing, who came to pick up the tranquility, was also very excited in his heart.

The birth of this mobile phone proves that today's technology has taken a big leap forward.

Moreover, with this, many places will become very convenient.

For example, during the journey, people can also find each other and talk to each other anytime and anywhere.

What an exciting achievement that would be?

Fu Hongxing took his daughter-in-law who had just gotten off the train and went directly to his son's company, and as soon as he entered the company, he saw that the three of them were sitting on the chair with their heads on their heads, with a disappointed face.

"This ...... What's going on? ”

As soon as Fu Hongxing and Ning Jing came in, when they saw this scene, their originally excited hearts suddenly chuckled.

Tranquility didn't care about anything else, walked directly towards Fu Xiangnan, touched his head, and asked softly.

Fu Xiangnan, who originally had a depressed expression on his face, suddenly raised his head when he heard the quiet voice.

"Mom, I'...... Failed! ”

Hearing her son's words, Ning Jing was stunned for a moment, and then looked to the side.

I saw a mobile phone the size of a brick placed on the table, which was very similar to the big brother in her impression.

Her heart couldn't help but pound, although it was an ancient appearance, but this was a mobile phone!

Over there, Fu Hongxing had already asked Fu Hongwei and Fu Xiuli about the reason, but in fact, this was not a failure.

It's just that the signal range of this mobile phone is too poor.

After a certain distance, the signal cannot be connected, and in this case, the mobile phone has really become a brick.

And if you want to be connected to the signal at all times, you can't do it unless the distance between each base station is very dense.

In this case, the money invested will be huge, not to mention that the cost of making a phone call will be huge, the cost of a mobile phone is expensive, for ordinary people, if you want to spend so much money, there is not necessarily a signal of no practical use.

This realization was a huge blow to Fu Xiangnan and them.

After all, it had already cost all the money of the three of them to build this mobile phone.