Why is there no 1G communication signal?

There is 1G for communication signals, but there is no data transmission in the 1G era.

First, let's understand what a communication signal is. In everyday life, except for atoms and electrons, almost all that remains is electromagnetic waves.

Infrared, ultraviolet.

Sunlight, electric lights, wifi signals, mobile phone signals, computer radiation, nuclear radiation.

Wait a minute. As long as it is a wave, it cannot escape three parameters: wave speed, wavelength, and amplitude.

The speed of an electromagnetic wave is a constant speed of light, so just consider:Wavelength (or frequency), amplitude (regardless of direction), where frequency is particularly important for electromagnetic waves.

So what exactly is a 1G signal? Why do many people think it doesn't exist? As the originator of mobile communication, 1G is an analogue system, which is a cellular wireless system based on analog technology.

The 1G system uses frequency division multiple access (FDMA) analog modulation to convert voice from 300Hz to 3400Hz to high-frequency carrier frequency MHz (generally 150MHz or above). The 1G era is a silly white sweet.

In addition to many drawbacks, such as poor confidentiality, limited system capacity, low frequency utilization, high equipment cost, and volume weight.

Great etc. Due to the limitation of transmission bandwidth, long-distance roaming of mobile communication cannot be carried out, and it can only be a regional mobile communication system"National standards"Nope"International standards", the system system is mixed and cannot roam internationally.

becomes a prominent problem. These shortcomings have been greatly improved with the advent of the second generation of mobile communication systems. Although the 1G era does not distinguish between China Mobile, China Unicom and China Telecom, there is a distinction between A network and B network, and behind these two networks is Ericsson, which dominates the analog era.

and Motorola. Communication equipment is like bricks, but it is extremely expensive, which is the "big brother" of the symbol of wealth. The era of mobile communication in China came relatively late, only started in 1987, and TACS was used as the standard.

byThe late use of 1G in China has led some people to think that 1G does not exist.

1G has only obtained the national standard, not become an international standard, its poor confidentiality, small memory, poor network and other reasons have led to the elimination, but the current 2G is actually the posterior of 1G, someone has improved the various shortcomings of 1G, and it has become the current 2G, but the current 2G is the lowest level of the network compared with various networks, and it is expected to be eliminated.

Because the minimum communication signal is 2G, 1G may be equivalent to no signal.

Because now technology has developed rapidly, 1G has been eliminated.

Because it was useless, it was eliminated, and it is estimated that it will not even receive information.

That's because the original signal didn't give him a name.

This was the initial signal, but now it is long unusable and has been eliminated.

This is the very first case. At present, it has long been eliminated and not used.

1G should have been gone for a long time, and it can't exist anymore.

Because 1G may be the same as not having a network, it is a state, and there is no point in existing.

Maybe 1G can't be developed, it may not have a signal at all, so there is no such thing.

Summary. 1.It may be that the signal coverage of your location is poor, and it is recommended that you restart your phone or try it in a different location.

2.Connect your phone to a wireless network to update your device to the latest version. Note:

4.Replace it with a different SIM card. 5.

If the signal is still unstable, please back up the data (contacts, messages, etc.) in your phone and try to restore the factory settings. If the problem still exists after the above operation, it is recommended that you bring the purchase invoice, three-guarantee voucher and mobile phone to the local service center for testing by the engineer.

1.It may be that the signal coverage of your location is poor, and it is recommended that you restart your phone or try it in a different location. 2.

3.If it doesn't work, please turn off the phone, take out the SIM card, and reinsert the dress. 4.

If the problem still exists after the above operation, it is recommended that you bring the purchase invoice, three-guarantee voucher and mobile phone to the local service center for testing by the engineer.

Can you tell us more about that?

I'm very sorry, I didn't express it to you clearly First of all, you first restart the phone or change the location, if it doesn't work, you connect to the wireless network, the letter travel will update the phone to the latest version, if it is invalid, please re-install the SIM card or replace another sim, if it is still invalid, you need to bring the purchase invoice, three guarantees and mobile phone to the local service center to replace or repair the mobile phone.

If the mobile phone cannot access the Internet normally, the fault can be troubled according to the following conditions: 1. The contact between the metal contacts of the SIM card and the mobile phone is not sufficient, and the SIM card can be reinserted into the positive hole. 2. If the SIM card is damaged or there is a problem with the mobile phone, you can change the phone to test whether it is the SIM card or the mobile phone is faulty.

3. The current location is a signal blind area or suddenly no signal, you can test in another place and pay attention to whether the mobile phone signal of other users around you is normal. 4. If the mobile phone card is in arrears or shut down, you can pay off the arrears and turn it on. 5. The service is suspended due to abnormal use of the number, such as the number being used for illegal or illegal activities.

6. If you are roaming in Taiwan, Hong Kong, Macao or abroad, you need to enable the roaming function of Taiwan, Hong Kong and Macao, and international roaming before you can use it. 7. When the total traffic generated by the Internet reaches the maximum value of the current month, the system will automatically turn off the Internet function, or limit the speed of the network, and the network will be automatically resumed in the next month.

The reasons for the sometimes absent mobile phone signal and sometimes only 2G are as follows:1Poor network coverage, no signal, and weak network signal in the place will cause the mobile phone to have a signal for a while and no signal for a while.

2.The reason for the poor mobile phone signal is that during the transmission of the signal, the friendly answer will be affected by various factors such as terrain, landform, and high-rise buildings, and if you are in a relatively closed place, the signal will be affected. You can restart your phone, or change the SIM card to a family friend's phone to try again, and see if the signal of other connected users around you is working.