The question of 3G mobile phone and mobile phone card, why does the mobile phone card suddenly show

I'll come, 3G because it is different from the current 2G signal mode, so now 3G you want to use a mobile phone that can accept the 3G signal mode, this is a 3G mobile phone with a 3G card, if you use a 3G mobile phone of Telecom Tianyi, you can only use Telecom's 3G ** card, you can use Unicom and Mobile's 3G mobile phone can also use the current SIM card, such as parallel Nokia, in foreign countries is a 3G mobile phone, take China with a mobile card, and, 3G mobile phones are expensive and cheap, now it is fresh, In fact, it's been the same as the current mobile phone for a long time, there are expensive and insightful, I have a telecom 3G mobile phone, only 100 yuan, of course, smart texting, expensive functions are more.

1.There are these three of you mentioned that the general mobile phone card can be used to surf the Internet.

2.Look at whether your phone supports 2G Generally, 3G mobile phones are compatible with 2G, and some do not support EDGE, such as BlackBerry 8707 3G card, which cannot be used by ordinary mobile phones.

3.Not necessarily, depending on the function of your mobile phone, there are also cheap ones, not very big 3G mobile phone differences, it's just**Internet speeds are faster, if you only use to call** send text messages, in fact, you don't need to buy a 3G mobile phone.

The three standards of 3G are hard to describe.

If it is displayed as 3G, it may be because there is no 4G 5G network or weak coverage in the current area, and you can move to other regions to try.

The conditions for using China Unicom's 4G network are:

1. The mobile terminal must be a terminal that supports China Unicom's 4G network standard; The mobile phone tariff must be China Unicom 4G** tariff, or China Unicom 4G network has been opened;

2. China Unicom 4G network can only be used under the coverage of China Unicom's 4G network signal, and if there is no 4G network coverage, it can be backward compatible with China Unicom's 3G and 2G networks;

4. Turn on 4G in the network settings of the mobile terminal;

5. Check whether the traffic of the month is capped or the network speed is limited.

If it is displayed as 3G, it may be because there is no 4G network or weak 4G coverage in the current area, and you can move to other regions to try. The conditions for Xiaohu to use the 4G network of China Unicom are: 1. The mobile phone terminal must be a 4G network standard terminal that supports China Unicom and Wang Xi; The mobile phone tariff must be China Unicom 4G** tariff, or China Unicom 4G network has been opened; 2. Unicom 4G network can only be used under the coverage of Unicom 4G network signal, and if there is no 4G network coverage, it can be backward compatible with China Unicom 3G and 2G networks; 3. The network signal will be affected by various factors such as topography, landform, high-rise buildings, and climate; You can try moving to another place to search for a 4G signal; 4. Turn on 4G in the network settings of the mobile terminal; 5. Check whether the traffic of the month is capped or the network speed is limited.