Difference Between WCDMA and CDMA:

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China Unicom 3G: It is widely used in the world WCDMA, because the network standard (frequency band) is the same, so more than 100 countries around the world can be used, if you travel abroad, you can use Unicom, and the transmission efficiency is high**The speed is 7M in China (**Speed 700K S), in fact, it is only about 200K. Because the network standard is common to foreign countries, most well-known brands of 3G mobile phones can use China Unicom's 3G network.

Mobile 3G: It is a domestic independent research and development of TD-SCDMA, because of the patent problem, mobile is not able to use the same standard (frequency band) network as China Unicom, so mobile can only be used in China, most foreign parallel mobile phones can not use mobile 3G. Unless some mobile custom phones.

The reason why the iPhone is not mobile** is because of the problem of the network standard, and the iPhone is not allowed to change the hardware configuration. Although the mobile signal is good, the mobile 3G network is the weakness of mobile. The transmission speed is the fastest according to the region, and the speed reaches 1m s.

Telecom 3G: Telecom 3G is the original Unicom CDMA, Unicom is very smart, sell CDMA to Telecom to use the money from the sale, build its own WCDMA network, so Telecom is a CDMA network, green network, small radiation, and also has applications abroad, so the United States has a CDMA version of the mobile phone, it can be seen that the most widely used in foreign countries is Unicom's WCDMA and Telecom's CDMA, both of which have fast transmission speeds, but due to the problem of domestic base stations, the signal has not been so good. Conversely, although the mobile is domestic, the signal is indeed better than the former.

Hehe, this has to be said by the network operator.

The original name was also Unicom, but in 08 Telecom acquired the business project of CDMA network card, so it was called Telecom, so CDMA changed from Unicom's service ** to 10000 service **.

It is a general term for the newly launched wireless network card business of China Unicom, which is divided into HSDPA HSUPA. I won't tell you too much detail here, I'm afraid you'll be confused, and I'll say a little bit about it, you know a little bit.

The difference with CDAM is that the speed is not connected, and the network used is different. CDAM's speed is very slow, but the network is used, and WCDMA is the use of Unicom 3G network, so the speed is very fast (although CDMA used to be also Unicom, but it was acquired by Telecom, so it is divided into Telecom!) ）

The signal transmission system is different ......

Yes, WCDMA is China Unicom's 3G network, and the network speed is incomparable to CDMA. The WCDMA standard speed is. Thank you for adopting.

CDMA is for men.

WCDMA is for ladies.

WCDMA is Unicom 3G, the network speed is fast and achievable, CDMA is Telecom, it is a separate C network, Unicom, Mobile G network, Telecom also has 3G is CDMA2000

Unicom's WCDMA is a European standard (it seems to be), and it can be used when you go abroad.

It is recommended that 3G or China Unicom be used.

WCDMA is China Unicom's 3G network model, which is the fastest 3G network to date. CDMA is the communication network of China Telecom, which has the advantages of good signal and low radiation.

WCDMA is China Unicom's 3G network, you can use a 3G mobile phone card or a mobile phone card and China Unicom's ordinary card, while CDMA is a telecom dedicated network "C network" and can only use Telecom mobile phone numbers, such as isoelectric signal segments.

CDMA is common rice.

WCDMA is acrobatic rice, inheriting the advantages of ordinary rice and wild rice.

Enough is popular.

WCDMA is the third generation of communication technology, and CDMA is the generation, so WCDMA is a little more advanced.

WC stands for toilet, DMA stands for direct memory operation, and WCDMA means direct memory operation in the toilet.

CDMA is all about operating the memory in a windowless toilet.

Do you understand?

One is the current Unicom, and the other is the former Unicom business, but it shows that it belongs to Telecom.

Dude,You still don't know what 3G is,CDMA has been there for a long time,Personally, I think it's a good signal,You have to use a dedicated mobile phone,I don't like it very much,WCDMA is Unicom 3G,Recommended,It's more mature abroad,Late start in China,I believe it will develop soon,And parallel mobile phones also have a lot of support。 CDMA2000 is the 3G of telecom, I don't recommend it, I heard that the signal is not very good, and the speed is slow. There is also a mobile TDSCDMA, which is not fast, but the state supports the original.

With any specialized mobile phone, hehe, I recommend Unicom's WCDMA

You can use phones that are marked as supporting CDMA or CDMA2000, but none of them are supported (not on iPhone).

What you said are technical names, and you can consult the encyclopedia for specific differences, but I personally think that ordinary users don't need to distinguish them.

CDMA is China Telecom's 2G network, CDMA2000 is China Telecom's 3G network, and WCDMA is China Unicom's 3G network.