What does the so called 3G of the iPhone 3G version mean

It's the third generation of digital communications, absolutely.

Yes 3G is a SIM card that runs faster than 2G.

There may be several reasons why an Apple phone shows 3G:

1.If the 4G network is not opened, if the mobile phone is not replaced with a 4G SIM card or the 4G network is not opened, the 4G network can only be used if the 4G is turned on. In this case, you can call the operator** to consult whether your mobile phone card has opened the 4G network, and whether the 4G service has been opened.

For Unicom telecom card, in fact, there is no need to change the card, and you can directly upgrade the 4G network.

2.If the area is not within the 4G signal coverage range, if the area is not within the 4G signal coverage, the 3G network will also be displayed. In this case, you can try to go to an area with a strong signal, or check if the SIM card is not plugged in.

3.Confirm that the iPhone is using a SIM card that supports the 4G network and has opened the 4G network, but after opening the 4G network, the 3G network is displayed, which is mostly caused by the lack of 4G signal coverage in your area. Ask your local regional operator if they cover 4G in the area.

In short, Apple's mobile phone display of 3G may be caused by a variety of reasons, which need to be troubled and solved according to the specific situation.

The mobile phone is not enabled on the 4G network. If the mobile phone has not been replaced with a 4G card or has not opened the 4G network, it is generally possible to use the 3G network if 4G is turned on. You can call the operator** to inquire whether the mobile phone card has opened the 4G network to sell Yanluo, and whether the 4G service has been opened.

If not, it will be enabled or directly upgraded to a 4G network.

The area is not covered by a 4G signal. In many places, the signal coverage is not very full, and the signal coverage is not very strong, such as parking lots or underground shopping malls will also be unable to use the 4G network due to the 4G signal coverage and the code cannot be matched, which will be reduced to the 3G network standard. You can connect in a different place and check if you can use the 4G network.

G is a wireless network standard, which is divided into three types: WCDMA (China Unicom), TD-SCDMA (mobile), and CDMA2000 (telecommunications).

2. Android is an operating system, mostly used in smart phones, tablets, etc., and the relationship with 3G is like the operating system of a computer and broadband at home.

3. iPhone is a mobile phone, and the relationship with 3G is like: whether the computer is Lenovo or Dell or Toshiba and whether the computer has a 1000M fiber optic network card.

The landlord said the above 3 things, I can summarize it in the way of the computer:

3G = Broadband Internet Access, Android = Operating System, iPhone = Computer Brand.

。。3G is the network standard, and Android and iOS are both systems.