Because the Ogland sisters arrived early, they successfully got a mobile phone each from the window and also got their own "phone number".

Unlike modern times, Fang Zheng did not equip the phones in the other world with SIM cards. Instead, the phone numbers here were bound to the phones. In other words, one phone number was one phone and could not be changed...

So forget about dual SIM dual standby. If you want to open a secondary account, please buy two mobile phones.

Smartphones are very convenient to use, and Fang Zheng used the language of the main world to introduce and explain them, so it didn't take long for Oglan and his sister to quickly learn how to use their phones.

"Sister? Sister? Can you hear me? I hear you, okay?"

"I can hear it, very clearly!"

Hearing his sister's clear voice, Oglan's legs were shaking with excitement.

Indeed, there are long-distance communications in the main world, such as the teleportation and breeze spells that mages often use. However, these methods also have many disadvantages, such as the teleportation has a distance limit, and the breeze spell can only transmit communications within 150 words - from a certain perspective, this can be regarded as the magical version of the telegraph in the other world.

However, these methods all have a serious flaw, which is that they require at least one of the two parties to communicate to be a wizard, and must know this spell. This is why even with magic, the nobles still insist on using letters to transmit information - after all, they are unwilling to rely on a third party for many things, and most nobles, in fact, do not know how to use magic, so if two nobles who do not know magic want to communicate with each other, they cannot use magic.

But now, this problem has been solved!

Even though he hasn't fully figured out what functions this "smartphone" has, the fact that it allows two people who don't know magic to communicate with each other anytime and anywhere is enough for Ogland to see its prospects and profits!

The important question now is where exactly can these phones be used, what is the effective distance and range, and what are the limitations…

If you want to know the answers to these questions, there is only one way.

"Let's go to the Tiandao Palace booth!!"

Holding the phone, Oglan quickly made a decision.

Unlike other places, when Oglan brought his sister to the booth of Tiandao Palace, there were already crowds of people here. Looking around, it was dark everywhere.

The Tiandao Palace booth was designed entirely by Nanoka from Franka Workshop. A crystal tower was suspended at the top of the center of the booth, and three pure white walls were used to divide the three areas on both sides. The three areas were decorated in different styles to highlight their themes.

The entire Tiandao Palace booth was divided into three areas: "communication", "information processing" and "entertainment". The "communication" booth mainly introduced to the guests in detail how to use a mobile phone, its range, and the entire process of how it works through pictures and text descriptions. The text descriptions and images used were also quite simple and easy to understand. Even Oglan, who didn't know much about magic, had a certain degree of understanding of the mobile phone in his hand after reading these diagrams.

"So, this phone can only communicate within a certain range by exchanging information with that crystal... Yeah, that's how it is, I understand..."

Frowning, Oglen carefully looked at the crystal tower suspended in the air. In other words, if you want to use this magic item called a mobile phone to communicate, you must spend money to build a crystal tower... This is a bit tricky. Maybe those big cities don't have to worry about it, but in some remote areas, spending a lot of money to build such a crystal tower will not make any profit, not to mention that you have to guard against the crystal tower being attacked and destroyed...

Moreover, the crystal tower cannot be moved. In a big city, it can be equipped with patrols. If it is in a remote area, it may be necessary to hire people for protection, which is another large sum of money... Maybe it can be shared with the garrisons and fortresses in the border cities? They must need this kind of crystal to communicate with the capital. If so, maybe the price can be lowered, and they can also take the initiative to send people to protect them?

As a natural born businessman, after Oglan calmed down, she immediately began to think about the profits and how to make them. She was sure that this invention would change the entire continent! Whether it was in terms of economy, military, or cultural exchange!

After all, from the current point of view, there will be no delay in sending information using mobile phones, whether it is communication or writing letters! The situation in the past where it took several days to write a letter and send it out, and you had to worry about the letter being lost on the way back or lost by bandits and robbers, will be gone forever!

Of course, they can send urgent letters directly through the magic circle, but the problem is that ordinary people don't have so many urgent letters to send? Take Oglan for example, if she wants to share with her friends that the flowers in the garden are blooming beautifully recently, does this also require an urgent letter?

Not to mention that magic teleportation is very expensive!

However, with a mobile phone, all of this is no longer a problem! She can transmit information anytime and anywhere, and she doesn't have to worry about her letters being missed or having problems!

After a busy day at work, she can drink afternoon tea in her own garden while chatting with her friends thousands of miles away by voice or video. Of course, she can also use the "shooting" function of her mobile phone to take pictures of the scenery she sees anytime and anywhere and share it with other friends...

Just thinking about all this, Oglan can't wait!

This is just what Oglan thought from the perspective of a businessman and a nobleman, but it is a completely different scene in the eyes of military officers born in the army and politicians in high positions.

Putting aside other things, think about it carefully. If a fortress on the border is attacked, you can get the information immediately in one second, instead of waiting foolishly for several days, and then watching the messenger appear in front of you on a horse that is almost exhausted to report the news of the attack on the fortress...what does this mean?

Speed ​​is of the essence in war!

With such a magical magic prop, many generals don’t even need to rush to the battlefield. Instead, they only need to observe and give orders through their mobile phones to command the battle!

For politicians, this is equally important. Information about themselves, friends, and enemies - if they can know who is trying to stab them in the back, wouldn't it be more convenient than waiting for the report to be received when the other party has already returned to their lair? Moreover, with such a prop, they don't have to worry about leaving evidence such as letters when communicating with their confidants far away!

The second "Information Processing" booth did not display a mobile phone, but something that looked very strange to Oglan. It looked like two rectangular black slabs connected together, and next to it was written that this thing was called - Personal Computer?

To Oglan, it was like an enlarged version of a mobile phone. In fact, Fang Zheng had no intention of popularizing computers in this world directly. The development of the main world was different from that of other worlds. The mages here did not need computers to help them perform spatial calculations when exploring the magic network and studying magic. This required a complete computing system, and the computing system of the main world was completely different from that of Fang Zheng's world. So after much deliberation, Fang Zheng decided to treat computers directly as "office supplies", and use them for printing and inputting documents, as well as various task lists and financial statements... At least this was safer than records written on paper.

There were more businessmen at this booth. After all, businessmen knew how important it was to find financial statements from a few years ago with just a click. You know, their financial statements were piled up higher than a mountain in the warehouse. If nothing went wrong, they would have to send people to search for many days just to find a small contract. Now, with computers to help record, they no longer have to waste time!

There is no need to worry about your warehouse being burned down.

After looking at the "computers" displayed at the "Information Technology" booth, Ogland brought his sister to the third booth, which was the "Entertainment" booth.

Now she really wants to figure out, how can she entertain with these things?

So far, through the "Communications" and "Information Technology" booths, Ogland has admitted that what Fang Zheng has brought to her this time is definitely a surprise. However, even so, she can't think of how to entertain herself with these things... After all, entertainment and games are completely different from the nature of her previous life and work.

Facts proved that Oglen's idea was correct. There were a lot of people at the third booth, but most of them were young people. Obviously, young people were more interested in entertainment games. They crowded in front of the booth, cheering from time to time, and even waving their hands, as if they were watching a duel.

Is so-called infotainment a duel?

Duel with your phone?

Oglan felt that she was a little confused, but she still squeezed through. When Oglan and her sister squeezed to the front with their slender bodies, they finally saw the scene in front of them clearly.

But when they saw clearly what was presented on the booth, they were stunned.