Questions about mobile phone short messages

With the popularization of mobile phones, communication between people has become more and more convenient and faster. In addition to basic voice services, short message, a rising star, has become the most popular communication method today. A greeting between colleagues, a few whispers between lovers, a few blessings between relatives and friends, and the joy of life are all included. Use mobile phones to communicate and communicate via text. Anytime, anywhere, not limited by time and space, and the cost is relatively low. The above advantages have prompted more and more people to join in and become "text message maniacs". However, how much do you know about short messages when you are immersed in text messages all day long? Next I will briefly introduce short messages.

1. The concept of short message

"Short message service" is a GSM user's mobile phone that can receive text messages of no more than 160 characters sent by other users regardless of whether it is turned off, talking or in call forwarding state, even if the customer exceeds Coverage or shutdown, the SMS service center can also store this information for customers. Once the user boots up or returns to the network, the center will send this information to the customer to ensure the reliability and confidentiality of the information transmission. Customers with Chinese mobile phones can also receive financial quotes, weather forecasts, news and entertainment information, etc. from the SMS service center after applying for Chinese services. Short message service is a business that has developed rapidly with the growth of mobile phone users. It is a special service provided by the GSM system to mobile phone users. To put it simply, short message is the function of leaving text messages on the mobile phone. This service is fundamentally different from the traditional voice transmission communication service. Chinese short messages are based on all-Chinese mobile phones. When China's first all-Chinese mobile phone Motorola CD928+ was launched, the first Chinese short message was quietly sent...

Since then From now on, the momentum of short messages will be like a torrential river, continuous; like the Yellow River overflowing, it will be out of control. ah! Sorry, I messed up, haha.

2. Parameters of short message

Short message length:

Since it is a short message, the number of words sent is limited. Only 160 English characters can be sent at a time, and one Chinese characters take up two English characters, so a short message can only send a maximum of 80 Chinese characters at a time (the length here is generally for SMS). It should be noted here that some mobile phones now support the function of super long text messages, which can write and send 201 Chinese characters at a time. In fact, this is just that the mobile phone can input 201 characters at a time, and the SMS center can only send 80 Chinese characters at a time. Therefore, mobile phones that support ultra-long text messages only send the text message to the SMS center, and then the SMS center sends it out in three times. So the fees are also charged in three installments.

Short message service center number setting:

First make sure that the city where you are located has opened the short message service, make sure that your mobile phone supports Chinese short messages, and then in the short message on the mobile phone Enter the local SMS service center number in the settings (check the local China Mobile or China Unicom business office). After setting up, you can send and receive short messages.

Receiving and sending short messages:

After receiving the short message on the mobile phone, the mobile phone will sound or vibrate to remind you that you have received the short message. At this time, you can View your text messages. When your mobile phone is turned off or out of the service area, the short message will be saved in the SMS center, and then the SMS center will continue to send this short message to your mobile phone within a certain period of time until your mobile phone is turned on or enters the network and can receive it. Until this short message. I don’t need to say more about sending short messages. Anyone who knows how to use a mobile phone will definitely send short messages. hehe. (Dongli yelled: I can’t do it!! I will...)

Storage and validity period of short messages:

After you finish reading your short message, You can choose to delete or save it. Ordinary mobile phones can only save short messages in the SIM, so if you choose to save, please make sure whether your SIM card has a place to save the short messages. However, there are some models on the market that can support storing short messages on the fuselage, such as Nokia8310, Siemens 3618, etc. This greatly facilitates those text message geeks. As I introduced above, when the mobile phone is not turned on or is not in the service area, the text messages sent or received are saved and wait for resending or receiving within a certain period of time. This time is the validity period of the short message. After this time, this short message will be permanently deleted.

So you'd better set the validity period of your short messages on your mobile phone to the longest time.

The parameters and settings of short messages are very simple. As long as you make the corresponding settings and check carefully, you can basically receive and send short messages.

3. The evolution of short messages: SMS→EMS→MMS

SMS: SMS is the abbreviation of Short Message Service, which means short message service. That is, a data stream carrying text, numbers, and symbols that can be sent between mobile phones. It was proposed and determined as the GSM standard in the 1980s. SMS was popular among people for a while, but with the craze for text messages, people found that SMS could only send boring text, and the form was too simple and not vivid. So people need more vivid and humane short messages. From this, a new generation of short messages was born.

EMS: EMS is the abbreviation of Enhanced Message Service, which means enhanced short message service. It can combine simple ringtones, pictures, even animations and text, and send them to each other between mobile phones that support EMS. We often see mobile phones such as Ericsson T68 and Siemens 2118 mobile phones that support EMS. EMS and SMS are similar, just simple improvements. It changes the monotonous text form of SMS and brings us more vivid and colorful short messages. All of the above are beneficial to the promotion of EMS. However, EMS is only a standard set by several mobile phone manufacturers, and sending EMS between mobile phones of various brands is not very smooth. Therefore, EMS cannot completely replace SMS and become a new generation of short messages.

MMS: MMS is the abbreviation of Multimedia Message Service, which means multimedia message service. This term first appeared in the early 1980s, but it did not enter the commercial market until the early 1990s, and it was not until 1999 that the business spread rapidly in countries around the world and continued its explosive growth trend. MMS is a further development of SMS and EMS. It is jointly formulated by the two organizations WAP Forum and 3GPP (3G Partnership Project). Its carrier can be GPRS or 3G. Mobile phones that support MMS can send multimedia messages including text, sound, images, videos, etc. to each other. MMS also supports multimedia services such as mobile greeting cards, mobile maps, business cards, and interactive videos. At this time, MMS is no longer in the category of short messages. It has very small restrictions on the size and format of the information. And with the increase of network bandwidth and the enhancement of mobile phone memory and processor, the capacity of MMS will be larger. However, with every gain comes a loss. Compared with the low cost of SMS, the cost of MMS can be said to be very high, about 3 to 5 times that of SMS, and almost the same as voice services. This gives those network operators a headache. How to attract more people to use MMS is what they have to do. Not long ago, in Shenzhen, China, the first MMS based on GPRS was sent, which proves that a more humane and colorful era is not far away from us.

From SMS to MMS, from the initial text to the current video and sound, short messages have gone through more than ten years. People are also happy to accept this change, after all, it is good for us. There may be better and more perfect changes in the future, but one thing I believe is that the spirit of communication between people will never be dimmed due to any changes. (Wow, it’s just a sigh of relief, don’t throw rotten eggs at me!!!)

4. The process of sending short messages

Do you understand how short messages are sent, how they are stored, and how they are received by the other party? Let me take mobile communications as an example to give you an introduction!

The process of sending short messages to GSM users: User A sends a short message to user B. First, user A sends a short message and submits it to the short message center. The short message center is a processing center responsible for saving and forwarding short messages. If the short message center successfully receives the short message, user A's mobile phone will display "successfully sent". If the submission fails, it will display "send failed". Then, the short message center submits the short message to the mobile switching center where user B is located (the mobile switching center is responsible for delivering short messages). If the mobile switching center successfully receives and delivers the message successfully, it will feed back to the short message center.

At this time, if user A turns on the SMS reply report, the short message center will send a short message to user A, telling him that "the other party has received it". Then the mobile switching center will deliver the short message to the short message center where user B is located, and then the short message center will send the short message to user B. The entire sending and receiving process is complete.

The process of sending short messages for Shenzhouxing users: The process of sending short messages for Shenzhouxing users is roughly the same as that for GSM users, except that because Shenzhouxing users pre-store phone charges, an additional item is added to the sending process, which is After user A sends the short message to the short message center, the short message center does not submit the short message to the mobile switching center where the other party is located. Instead, it first goes to the service control point to check whether the balance of user A's phone bill is sufficient. If the balance of user A's phone bill is sufficient, If so, then the short message center will submit the short message to the mobile switching center where the other party is located. Then the following process is basically the same as for GSM users.

In fact, the entire short message sending process is very simple. Users only need to figure out what the basic responsibilities of each service center are. Don't be confused!

By the way, let me say one more thing. Now China Unicom and China Mobile can send short messages to each other. This sending process is also very simple. After the short message center of China Mobile (China Unicom) receives the short message, it has to go through the gateway of China Mobile (China Mobile), then through the gateway of China Unicom (China Mobile), and then send it to the short message center of China Unicom, and then Sent to the user's mobile phone. (Alas, let’s stop here, I’m even dizzy…)

5. Problems with short messages

Having said so much, everyone should have an understanding of short messages. Although short messages are very popular nowadays, and their popularity seems to be increasing, short messages inevitably have some problems that need to be solved. For example, short message congestion, short messages cannot be sent to users in time due to channel congestion. This obviously still has technical flaws. Another example is that the content of short messages is confusing, and some pornographic and reactionary words or pictures are spread everywhere along with the short messages, causing adverse effects. Some people use short messages to commit fraud. Therefore, the management of short messages still needs to be strengthened in the future. Furthermore, the most troublesome point is the emergence of short message viruses. Hackers exploit program vulnerabilities in some short message websites to attack some mobile phone numbers. Sending a large number of spam text messages will not only affect normal communications, but may even cause cell phone paralysis. The above are all shortcomings of short messages at this stage. If not solved in time, they may cause serious problems. Telecommunications and network operators should not only see the huge benefits brought by short messages and make blind investments, but also work hard on the management and coordination of short messages!

The reason why short messages have become a new fashion is entirely related to its convenience, speed and low cost. No one would have thought that simple short messages would have such a huge market. The reason is simply that short messages have changed the way people obtain information and have become a new and relatively independent interaction mode. This "new, strange and fast" form is very in line with the taste of today's young people. In addition, various services and contents related to short messages are gradually developing and growing. You can use short messages to receive a variety of information, entertainment, games, etc. It is not difficult to see why short messages are so popular. In the future, the development of short messages will be even more turbulent. I believe that in the near future, it will not be a problem to use short messages to download a "blockbuster" and go home to watch it slowly!