Doomsday Survival: I can upgrade entries infinitely

[Some outdated smartphones]

[This entry has met the upgrade conditions and can be upgraded]

[After the upgrade, this entry has been upgraded to a [-]-kilometer quantum smartphone]

[This upgrade requires one-star fragments × 10]

[Currently owning one-star fragments: 1385 pieces]

Quantum smartphone?

This is a new thing!

Very black technology meaning!
According to the prompt of the system, this [-]-kilometer-level quantum smartphone is based on quantum state information transmission, which can realize point-to-point encrypted information transmission, and can reach [-]-kilometer-level information transmission.

To put it simply, if there are two quantum smartphones, the communication between the two quantum smartphones can be directly realized at the level of hundreds of kilometers.

You can communicate directly without relying on the base station.

"This is possible!"

"Just now, Bai Xiaomeng said that there is no way to make a call!"

"Now, my smartphone can be upgraded to a quantum smartphone, and it can make calls without relying on base stations!"

"It will be much more convenient to communicate remotely in the future!"

"However, I don't know if other people's mobile phones have entries, and whether they can be upgraded!"

"If only my phone can be upgraded, it won't be of much use!"

Thinking of this, Wang Xuan looked at the mobile phone in Liu Ruoruo's hand beside him.

Hey!
Liu Ruoruo's cell phone actually has an entry!

It can also be upgraded!
Wang Xuan looked at the phone in Bai Xiaomeng's hand again.

There are also entries!

Wang Xuan then looked at the mobile phones in other people's hands.

He was pleasantly surprised to find that entries basically appeared on everyone's mobile phones.

So, he rolled his eyes and said, "Students, do you want your mobile phones to be able to make calls in this world?"

"Of course I did!"

"But I'm afraid this is impossible!"

"After all, the telecom operators here probably don't exist anymore!"

"Even if it exists, the mobile phone signal in this world is not necessarily the same as our mobile phone!"

"..."

All girls of course wish they could make calls on their cell phones.

However, they also knew in their hearts that this was impossible!

However, what Wang Xuan said next surprised and delighted them.

"I have a way to make our mobile phones call each other!"

Wang Xuan said with a smile.

"Wang Xuan, do you really have a way to make our mobile phones call each other?"

Bai Xiaomeng looked at Wang Xuan very excitedly.

"Of course!"

"You can give me your mobile phone!"

"I'm going to modify it so that our mobile phones can make calls to each other!"

Wang Xuan nodded with certainty and said.

"How do you transform it?"

Bai Xiaomeng asked very curiously.

"Student Bai Xiaomeng, have you forgotten what I said before?"

"Don't be curious!"

"Don't inquire!"

"Since I said that everyone's mobile phones can make calls to each other, of course I will do what I say!"

"As for how I did it!"

"You don't have to know!"

"I won't say it either!"

"I hope you can understand!"

"If you believe me, give me your phone!"

"I'll be transforming it into a phone that can make calls soon!"

Before, Wang Xuan told everyone that he might come up with some things that no one had seen before.

And these extraordinary things are basically obtained through the entry system upgrade.

It's hard to explain the problem with the source!
Therefore, he has given everyone a vaccination in advance.

I ask everyone not to inquire about the source of these extraordinary items in the future.

However, everyone has curiosity!
Especially this curious baby Bai Xiaomeng.

Bai Xiaomeng was very curious about how Wang Xuan realized that their mobile phones could make calls, and for a moment forgot what Wang Xuan said before.

She said with some embarrassment: "Wang Xuan, I'm sorry, I was just too curious, so I forgot what you said before, since you said that our mobile phone can make calls, I believe you, this is my mobile phone, Take it and transform it!"

Said, Bai Xiaomeng very actively handed her mobile phone to Wang Xuan.

"Wang Xuan, I trust you too, this is my phone!"

Liu Ruoruo also handed her mobile phone to Wang Xuan.

"Wang Xuan, this is my phone!"

"This is my phone!"

"My cell phone!"

"..."

Everyone handed over their mobile phones to Wang Xuan one after another.

"Wang Xuan, after you modify our mobile phone, will the contents of our mobile phone be lost?"

Zhao Yuting asked a very important question.

"Data such as pictures, music, and contacts should not be lost!"

"However, various applications like WeChat will all be lost!"

"After all, after the mobile phone has been remodeled, the system inside has also changed!"

Wang Xuan replied.

"what?"

"Wechat will be lost?"

"Then we won't be able to use WeChat in the future?"

For many people, WeChat has become an indispensable communication tool.

Without WeChat, it would be unacceptable for a while.

Therefore, when everyone learned that WeChat is gone, everyone reacted very fiercely!
"Fellow students!"

"We are no longer in our original world!"

"WeChat is just a decoration for us!"

"and also!"

"If we can really return to the original world!"

"Everyone's WeChat account will not disappear either!"

"WeChat account can still be used!"

Wang Xuan explained to everyone.

After listening to Wang Xuan's explanation, everyone felt that it made sense.

Therefore, they are no longer obsessed with the problem that WeChat will be lost.

Wang Xuan collected everyone's mobile phones together.

Afterwards, he went to the second floor alone and found a place where no one was there.

Then, he began to upgrade the entries of all mobile phones.

He first upgraded the entry on his phone.

[Congratulations, the upgrade was successful]

At this moment, Emperor Xuan's smart phone has been upgraded to a [-]-kilometer quantum smart phone.

He found that the appearance of his mobile phone hadn't changed in any way.

However, the internals and systems of mobile phones have undergone earth-shaking changes.

All the original apps on his phone have disappeared.

Now, there are some built-in APPs on his mobile phone.

Such as smart housekeeper, quantum communication and other apps.

I don't know if the system is to take care of everyone's habit of using WeChat.

Therefore, the interface of the quantum communication APP built into the mobile phone is very similar to the interface of the WeChat APP.

Not only can text chat!

You can also make voice calls, video calls and more!

It even has the function of building a group chat!
However, this quantum communication app is somewhat different from WeChat.

Because the Internet may no longer exist in this world.

Therefore, if you want to realize the function of group chat, you must establish an internal LAN.

The quantum communication group is equivalent to an internal local area network.

First, Wang Xuan briefly understood how to use this quantum smart phone.

Afterwards, he upgraded all the entries on other people's mobile phones.

Other people's mobile phones have also become quantum smartphones at the [-]-kilometer level.

Moreover, the problem of charging the mobile phone is also solved.

The card slot that used to hold the phone card has now become the energy slot for the energy button.

You only need to poke a small hole on the side of the phone with a needle to pop out the energy slot, just like popping out the card slot before.

After popping out the energy slot, you can take out the exhausted energy button and replace it with a brand new energy button.

The power button needed for this quantum smartphone is the No. [-] power button, which is as big as the thumbnail.

Very small!
Don't look at how small this energy button is!

But it is extremely durable!

Under normal circumstances, a No. [-] energy button can keep the mobile phone in normal use for one month!

Absolutely super long standby time!
After upgrading everyone's mobile phones, Wang Xuan returned to the living room on the first floor.

At this moment, everyone was chatting while waiting for Wang Xuan.

They saw Wang Xuan coming down from the second floor, and greeted him one after another.

"Wang Xuan, how is it?"

"Has the mobile phone transformation been successful?"

"Let's see how it works!"

"..."

Bai Xiaomeng and other girls couldn't wait to ask.

"Don't worry, I'll return your mobile phones to you one by one!"

As Wang Xuan said, he returned the mobile phone to everyone.

Since the appearance of the mobile phone has not changed, and many people have mobile phone cases for their mobile phones.

Therefore, everyone can easily recognize their mobile phone.

After everyone got their phones, Wei Wei was a little disappointed.

Because they found that all the previous apps on their mobile phones were gone.

There are only a few built-in apps on the current mobile phone.

"Wang Xuan, how can we make calls with this mobile phone now?"

Bai Xiaomeng asked expectantly.

The other girls also looked at Wang Xuan expectantly.

"In everyone's mobile phone, there is now a quantum communication app."

"This app is similar to the WeChat interface we used before!"

"The functions are similar!"

"Every mobile phone has a code, which is equivalent to the ID card of the mobile phone!"

"This code is unique and will not be repeated!"

"Quantum communication uses this code to automatically generate an account!"

"This account is similar to our mobile phone number!"

"In the future, we can send text messages, voice calls and video calls through this account!"

Wang Xuan explained to everyone.

Then, he taught everyone how to automatically generate an account on the Quantum Communication APP.

This account number is a string of numbers.

Of course, each account can also set personalized settings such as nickname, avatar, etc.

Just like WeChat!
"Then how do we add friends?"

Liu Ruoruo asked.

"Everyone clicks on 'I' on the APP, and you can see a profile picture!"

"Click on the avatar, there is 'my three-dimensional code' inside!"

"Then click on this, and the APP will display a three-dimensional code!"

"The other person only needs to use the app's scan function to scan this three-dimensional code, and they can automatically add friends!"

"It's equivalent to adding an address book!"

"This operation is similar to that of WeChat!"

Wang Xuan guides everyone how to add friends.

"A three-dimensional code?"

"Amazing!"

"One more dimension than a QR code!"

Bai Xiaomeng smiled.

Afterwards, everyone followed Huang Xuan's method and opened their respective [-]D codes.

I saw that the three-dimensional code was actually in color, and it also had a three-dimensional embossed effect.

Sure enough, it is somewhat different from the QR code.

Then, everyone added each other as friends.

"Wang Xuan, I see that this app also has group functions!"

"Can this group function be used?"

Careful Ye Keqing has noticed the group function of this APP.

Other girls have also discovered this feature.

"Of course it can be used!"

"Ms. Ye, you are our counselor, you can start a group first!"

Wang Xuan said.

"it is good!"

Ye Keqing nodded.

Afterwards, under the guidance of Wang Xuan, she started to build a group.

"Uh……"

"What's the name of this group?"

Ye Keqing asked.

Afterwards, everyone said a word, and I said a word, and proposed a lot of group names.

Some people suggested to use their class as the group name.

Some people suggested that the group name be '37 Wanderers from Earth'.

Some people suggested that the group name should be '37 Survivors in the Doomsday World'.

……

In the end, Ye Keqing thought twice and chose a group name suggested by Liu Ruoruo, "Our Home in the End Times"!
After Ye Keqing built a group, she pulled everyone into the group.

Moreover, she also set Wang Xuan and Liu Ruoruo as one of the group administrators.

"Hey, I'll give it a try first, see if this app works!"

Bai Xiaomeng chuckled.

Later, she sent a message in the group: "Hi everyone, I'm Bai Xiaomeng [Baoquan]"

Immediately, everyone saw the news through the APP group.

"Sure enough, it works!"

"Great!"

Everyone was very pleasantly surprised.

Although they don't have internet now.

However, there is an APP similar to WeChat, which can communicate with each other, which can be regarded as comfort!
So, everyone was very excited to post messages in the group.

"Let's try voice calls and video calls again!"

Liu Ruoruo said.

Afterwards, she sent Wang Xuan a video call invitation.

Immediately, Wang Xuan received the invitation for this video call.

"I'll pick you up in the yard outside!"

As Wang Xuan said, he went to the courtyard outside to connect to the video call.

Soon, he saw Liu Ruoruo and other girls who squeezed into the screen through his mobile phone.

"I saw Wang Xuan!"

"Video call is really possible!"

"awesome!"

"Finally found the feeling before!"

"..."

A group of girls is very informative.

They didn't expect that in this doomsday world, video calls could also be realized.

Afterwards, Wang Xuan and Liu Ruoruo tested the voice call again.

No problem either!
After the test was over, Wang Xuan returned to the villa.

"Wang Xuan, you are too powerful. After you modified our mobile phone, we can actually make calls, and we can also make video calls, and even have group functions!"

"It will be much more convenient for us to contact in the future!"

"Wang Xuan, you helped us solve another big problem!"

"..."

A group of girls were so excited.

[Favourability from Bai Xiaomeng +5! 】

[From Lin Yuechan's favorability +5! 】

[Favourability from Han Mengjie +5! 】

【…】

Wang Xuan gained another wave of everyone's favor towards him.

"That's right, Wang Xuan!"

"How do we charge our mobile phones now?"

Bai Xiaomeng asked curiously.

"No need to charge!"

"The place where the phone card used to be placed on the phone is now used to put the energy button!"

"In the future, if the phone runs out of battery, just install a brand new energy button!"

Wang Xuan pointed to the card slot on the side of the phone and explained.

"Oh!"

"I see!"

"By the way, how long can an energy button be used for?"

Bai Xiaomeng asked again.

"With normal use, it can be used for a month!"

Wang Xuan said.

"Wow!"

"Such a long time!"

"Great!"

Everyone was very pleasantly surprised when they learned that the standby time of the energy button was so long.

"Wang Xuan, I saw an app called 'Smart Butler' on the phone!"

"What is this app for?"

Liu Ruoruo asked curiously.

"Well... I'll tell everyone tomorrow!"

"It's getting late!"

"Everyone, rest early!"

Wang Xuan smiled slightly.

Although everyone is very curious, what is the function of the 'Smart Housekeeper' APP.

However, what Wang Xuan said is correct, it is almost 11 o'clock in the evening.

Everyone had a day's work!

I'm sleepy now!
So everyone went back to their beds and went to sleep.

Of course, except for the two girls who were watching the night in the yard.

I don't know how long it took, but when everyone was about to fall asleep, a girl's scream suddenly came from the yard.