Is Telecom upgrading the 4G network, and what is going on with Telecom 4G becoming 2G

Hello! Hopefully, the following will be helpful to you.

China Telecom's 4G network is currently only tested in some cities, and it will soon be officially licensed for 4G licenses, which will be officially commercialized nationwide. You can change your 4G SIM card for free at the business hall and use your 4G mobile phone to experience high-speed Internet access.

Change the sky wing 4G! "The new No. 177 segment is paired with a popular 4G mobile phone, allowing you to enjoy a faster, more extreme, and unique experience! For more exciting content, please pay attention to Anhui Telecom's online business hall.

According to your description:

China Telecom Tianyi 4G network has been opened in 16 cities, including Shanghai, Nanjing, Shenzhen, Hangzhou, Chengdu, Hefei, Wuhan, Nanchang, Chongqing, Shijiazhuang, Jinan, Xi'an, Lanzhou, Haikou, Zhengzhou, Nanning.

Have a great day!

China Telecom has implemented Section 177 in 16 cities including Shanghai, Xi'an, Chengdu, Hangzhou, Wuhan, Nanjing, Jinan, Hefei, Shijiazhuang, Haikou, Zhengzhou, Chongqing, Shenzhen, Nanchang, Nanning and Lanzhou.

If you need to buy a telecom mobile phone, you can log in to China Guangdong Telecom mobile phone**, many** mobile phone discounts, contract plans and more valuable phone bills. If you want to know more, welcome to Guangdong Telecom to know the platform to ask questions, and there will be more professional customer service to answer for you.

It hasn't officially started yet, it's still in the experiment.

Hello, there may be three situations when the 4G of the telecom mobile phone becomes 2G, the call is not opened when the VoLTE is not enabled, the 4G signal is not good, or the mobile phone is in arrears.

Telecom mobile phones that have not activated the VoLTE function need to standby 2G 4G at the same time, and some mobile phones only display standby 4G, but when they come, 2G will be displayed.

Due to the unique format of the C network and the fact that the LTE network itself does not carry voice services, China Telecom's mobile phones use SVLTE technology to standby 2G 4G at the same time, complete voice services on the 2G network and complete data services on 4G. Anhui Telecom*** is at your service.

It may be that there is no signal; or in arrears; Or the mobile phone card is too old and needs to be replaced with a new card (**The number will not change).

The 4G signal is not covered in your location, and the telecom signal is automatically transferred from 4G to the 2G signal network.

Summary. Hello, I am glad to answer for you: Analysis of the reasons for the change of 4G to 2G in telecommunications:

Hello, there may be three situations when the 4G of the telecom mobile phone becomes 2G: 1. When the VoLTE is not activated, the 4G signal is not good. 2. Or the mobile phone is in arrears. 3. Telecom mobile phones that have not opened the VoLTE function need to be at the same time, 2G 4G, and some mobile phones only display standby 4G, but 2G will be displayed when they come.

Hello, I am very happy to answer for you: Telecom 4G to 2G reason analysis: Hello branch slag, there may be three situations when the 4G of the telecom mobile phone becomes 2G 1. When the VoLTE is not opened, the 4G signal is not good.

2. Or the mobile phone arrears. 3. Telecom mobile phones that have not opened the VoLTE function need to be at the same time, 2G 4G, and some mobile phones only display standby 4G, but 2G will be displayed when they come.

Mobile: Mobile is the mainstream of the 2G network era, and its 2G network advantages are unmatched by the other two, but 3G uses TD-SCDMA, which is independently developed by China, due to the immaturity of the network, although it has entered the world's three major 3G network camps, but the actual use is not ideal. 2.

Unicom: Unicom is now a completely new start, the original Zhaoguan CDMA transferred to Telecom, the old 2G is not good, only 3G, due to the use of the most mature WCDMA technology in the world, all feel much better. 3.

Telecom: The mobile phone service of the telecom family is developed by the original CDMA of China Unicom, and currently uses the CDMA2 EVDO network, which is also a relatively mature network in the world, so it is still good.

This is the fastest and best network speed network of China Telecom, which provides the best and most stable voice data networking, and the voice call data quality reaches the highest height.

4G+", ** proposed by China Telecom at the 2015 Tianyi Terminal Trade Expo, "Tianyi 4G+", is a new business brand launched by China Telecom. China Telecom's launch of "4G+" is intended to be one step ahead in the 4G field and improve the network speed of wireless networks to a new level.

4G1+ refers to the 4G+ network of Card 1.

4G2+ refers to the 4G+ network of Card 2.

Hello Telecom's "Tianyi 4G+" is referred to as "Telecom 4G+", which uses carrier aggregation technology (CA) to achieve a peak downlink rate of 300Mbps and an uplink peak rate of 50Mbps, which is faster than the current uplink and downlink peak rate on the 4G network.

"e 4G+" is a service brand built by China Telecom by using the world's cutting-edge carrier aggregation (CA) technology, on the basis of the original e 4G network, to further expand the network spectrum, optimize the network quality, and greatly improve the uplink and downlink rates of the network.

Because the mobile phone is still 4G, if you want to use 5G traffic, you don't need to change the card, just change it to a 5G mobile phone. However, it is also possible that there is no 5G network coverage in the area for the time being, and the 5G SIM card is not installed in the main card slot.

Are you using a 5G phone? If it is a 5G mobile phone, make sure that it is in the 5G signal coverage area.

<>2, record China Telecom**, click the login button, enter and password login in the login interface, if you don't register, register here first.

3. After logging in, you can see the shortcut link of 3G liter 4G on the right side of China Telecom's home page, click the icon.

4, because it is an old user, select the "old user to 4G" item on the right, generally 4G** will have some discounts, select "do not change the number to 4G (change 4G**)" item, and then click the "Handle Now" button.

5. Select the type of card to be replaced on the page of the noisy section, which is divided into 4G small card and 4G nano card, and the corresponding card type can be selected according to the situation of the mobile phone.

6. After clicking Next, the personal information column will pop up, if you use it for the first time, you will be asked to fill in your personal information, please fill in your personal information correctly, it costs 1 yuan to replace the card, and finally click the "Submit Order" button.

7, here you can choose the payment method to pay, after paying 1 yuan, just wait for the courier to deliver the upgraded 4G card to your home.