What’s the difference between ZTE MF880 and ZTE MF820S2?

As one of the 4G LTE modems from ZTE, the TDD modem ZTE MF820s2 may not be well known because it's born for China Mobile 4G LTE networks. ZTE MF820s2 looks very similar to ZTE MF820, they are using the same appearance module, but inner parts are completely different. ZTE MF820 is for FDD network while MF820s2 works for TDD & FDD.    

There is another 4G TD-LTE modem ZTE MF880, which is also FDD compatible. Today, we will have a look at what's the difference between ZTE MF820s2 and MF880.    

Frequency Bands    

Frequency band should be the key difference between similar 4G modems, even though some modems looks almost the same. The frequency band decides where could work or not, and which operators they could support. ZTE MF820s2 supports FDD 2600MHZ and TDD 1900/2300/2600MHz. The band 1900MHz is a special band that very operator has chose as their 4G network spectrum. So many other 4G modems could replace ZTE MF820s2 if the band 1900MHz is not a must frequency. ZTE MF880 could also support TDD 2300/2600 MHz, but it cannot work with band 1900MHz. As a TDD and FDD surfstick, ZTE MF880 also supports FDD800/2600MHz. So when users don't require modem to support 1900Mhz, ZTE MF880 could fully replace MF820s2.    

4G LTE Speed    

As standard 4G USB modems, ZTE MF880 and MF820s2 both supports the TDD and FDD network. However, under the two technologies, the data transmission rates are different. When working on FDD network, the peak download speed could reach 100Mbps while upload speed up to 50Mbps. But if on TDD networks, maximum download speed could reach 68Mbps and upload speed could reach 17Mbps. By the way, the speeds are only theoretical speeds. In real practice, the network can't be perfect as we wish; the link speeds may vary time to time.      

External Antenna and MicroSD card  

It's a pity that both ZTE MF880 and MF820s2 both don's have connector for external antenna. And we didn't find any place to plug the MicroSD card. So they couldn't use as flash memory card.      

USB Design   ZTE MF880 and MF820 are both under design of 2D USB design. The USB is rotatable for 270 degrees. This design will help users to use more space when plug to PC.    

We can't make conclusion that which is better. They are in same brand and could meet different requirements from users or operators. So it would be better to know more about the difference between similar models. If you want to check more 4G LTE modems, welcome to land www.4gltemall.com  

Which 4G Modem is Good for TDD network?

More and more 4G networks are launched to commercial as time being, many users want to have their own mobile gadgets to experience faster surfing speed. However, there are so many 4G modems on the market now, which one is better? It's a good question. First, we should know some knowledge about 4G Network. LTE and WiMAX are two most popular 4G Network. Since LTE dominates the 4G trend. Today, we would introduce 4G modem for LTE network.  

As the most popular 4G network, LTE uses TDD and FDD technologies to transmit the data. Subsequently, there are 4G TDD modemand 4G FDD modem. They both have special advantages and weakness. This is not our topic today. Today we talk about the 4G modem for TDD network, i.e. 4G TDD Modems.  

TDD Frequencies Band & Spectrum

LTE BAND NUMBER    ALLOCATION (MHz)      Wideth of band(MHz)

33                                 1900 - 1920                              20

34                                 2010 - 2025                              15

35                                 1850 - 1910                              60

36                                 1930 - 1990                              60

37                                 1910 - 1930                              20

38                                  2570 - 2620                             50

39                                 1880 - 1920                             40

40                                 2300 - 2400                             100

41                                 2496 - 2690                             194

42                                 3400 - 3600                             200

43                                 3600 - 3800                              200

Below are the top TDD Modems that are good for 4G TDD networks:  

4G modems for band 38(2600MHz):

1. Asiatelco ALT-C180 .
2. Asiatelco ALT-C186
3. Asiatelco ALT-C187
4. Huawei E392-92
5. ZTE MF820S2
6. ZTE MF820T
7. ZTE MF880
8. HUAWEI E392u-21

 

4G modems for band 40(2300MHz): 

1. Asiatelco ALT-C160,
2. Huawei E392-92,
3. ZTE MF820S2 .
4. ZTE MF880
5. ZTE MF820T

 So if you are hesitate on which TDD Modem to choose/buy, hope above information would help you make the decision. But since the TDD modems for rest bands are very few, we will make a summary next time about 4G LTE dongles.  

HUAWEI E3276 4G LTE Modem - World First Cat4 LTE FDD modem

Huawei is the first in Europe to launch a new type of 4g modem theoretically offers up to 50 percent higher data rates in the Swedish 4G networks. Huawei E3276 4G USB Modem supports speeds up to 150 megabits per second and you first put on the market of telecommunications operator Telia.

Huawei E3276 is a so called Cat4 modem capable of download speeds of up to 150 megabits per second and upload speeds of up to 50 megabits per second. The modem comes with support for all LTE frequency band in Sweden, LTE FDD 800/900/1800/2100/2600 and socket for an external antenna when the user wants to improve the reception. - As a pioneer in integrated 4G solutions, we work for the whole time to develop standards and developing products that provide users with a better user experience. Swedish consumers place high demands on mobile broadband and the new generation of modems, we can offer them the best solution, says Oscar Thunström, sales, sales manager at Huawei Device.

Huawei has developed its own modem circuit for E3276 and claim that they reach both longer battery life and keep a lower heat than previous solutions. The modem also comes with support for 3G and 2G in areas without 4G coverage.

The new USB modem is available from today as an option on all private and business customers who order mobile broadband subscription with Telia.