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27/02/2013

ZTE MF880 and MF820T 4G LTE TDD USB Modem

As one of the most important 4G vendors, ZTE has released many 4G LTE modems. ZTE MF820T and MF880 are two of the popular TDD models.  

 

Just like other 4G LTE modems from ZTE, ZTE MF880 and MF820T followed the same design as ZTE MF820 4G LTE FDD Surf stick. The modem body is a little bit larger than usual 3G USB stick. And taking them in hand, users can feel the weight is more than 3G modems.

 

   

 

What is a pity that both ZTE MF820T and MF880 don't have the connectors for external antenna. Perhaps at the big inning when engineer designed the mode, they didn't take this factor into their blueprint. As we can see, in the serials of ZTE MF820D, MF821, MF821D, MF820S2, MF820T, MF880, they all incorporates no antenna ports. As the key features of MIMO connection, we are afraid it may not be as good as the modems with MIMO antenna for data transmission.

    

 

ZTE MF820T and MF880 both work for 4G LTE TDD network, perhaps due to for different providers, they support different TDD frequency bands as below:    

 

ZTE MF820T 4G LTE TDD Single Mode USB Modem:

* Single mode LTE TDD 2300/2600MHz  

 

ZTE MF880 4G FDD TDD USB Modem:

* FDD 800/2600MHz

* TDD 2300/2600MHz

* DC-HSPA+/HSPA+/HSPA/UMTS 2100/900MHz

* EDGE/GPRS/GSM 850/900/1800/1900MHz

   

This should the key difference between ZTE MF820T and MF880. Per current information, ZTE MF880 had need presented to public under provider "3" from UK. And ZTE MF820T should be for China Mobile. What should focus is that ZTE MF880 could also support FDD LTE band 800/2600MHz. It means MF880 could switch between FDD and TDD networks, so ZTE MF880 is somewhat like a enhanced ZTE MF820T.      

 

Regarding the data transmission speed, they both support download speed at 68Mbps and upload at 17Mbps under TDD –LTE network. ZTE MF880 seems more powerful because when working at FDD network, the peak speed could reach to 100Mbps for downlink while uplink could reach 50Mbps.  

 

In conclusion, ZTE MF880 seems more powerful than ZTE MF820T, so if you want to want buy ZTE 4G LTE TDD USB Modems, welcome to www.4gltemall.com    

24/01/2013

Vodafone K4510 and K4511 USB Surf stick General Review

As the top network provider, Vodafone had released a serial of USB surf stick for its customer and to meet various demands from customers located in different areas.  

 

Sometimes, one Vodafone USB surf stick may has two or more variants. Today,we will have a simple review of Vodafone K4510 and K4511 Internet stick.

   

 

Following Vodafone K3765 and K3565, K4510 and K4511 has upgraded the speed for high speed demand. That should be the key feature different from their Predecessor model. The appearance design of K4510 and K4511 is still the classic compact USB, slim and easy to take in hand or bag.  

 

To help the USB modem gain better signal so that users could surf in high speed of data transmission, the two modems has external antenna connector. So if users are in rural area or some place of low network coverage, add an external antenna, better signal could be gained.  

 

The difference of Vodafone K4510 and K4511 is just the 3G UMTS bands. They both support GSM/GPRS 850/900/1800/1900 MHz.  

 

Vodafone K4510:  3G HSPA+/HSDPA/HSUPA/UMTS 900/2100 MHz (K4510 -also named K4510-Z ZTE) Vodafone K4511:  3G HSPA+/HSDPA/HSUPA/UMTS 850/900/1900/2100 MHz (K4511 - also named K4511-H)  

 

Someone may ask, what the K4510Z and why it’s K4511H, actually, they come from difference producer, Z means ZTE, the Chinese telecom equipments supplier, while the H means HUAWEI, and it’s also the top supplier of telecommunication products. They both supply reliable products, so Vodafone let them produce the two variants.   So before you buy this modem, please make sure they are suitable for you 3G network bands. That will determine whether you can enjoy the fastest speed available. 4gltemall.com provide unlocked Vodafone K4510Z and K4511H to help you enjoy surfing freely.