Hi, The signal strenth of this dongle drastcaly changes if you move it even 1 meter. I am using a Aircel 3G. Its eshowing full signal if I am puting it in my Samsung Grand but at the same place if I am puting it in this dongle, its only 1 signal and frequent disconnection.So this one is not having good internal antena and 3g chipset.I did some trick to get better signal. I have connedcted it with a long USB extension cable and hanged it to wall , then only getting good signal but that is not a good solution as you can not do this setup if you are a regular traveller.Conclusion is buy this one if you stay near to your ISP tower. Best alternative is tethering via a good 3g mobile.

I bought this data card from amazon after comparing the prices in all sites. It was delivered in 3 days and working very nicely. I am using tata docomo 3G in bangalore and I am getting 2.5 - 3 Mbps speed using this. I didnt feel that mobile partner software is that much slow. its pretty good. I recommend this product.

I bought Huwaei because it was the fastest Data Card in this range it cost me 1.4k rupees and it worth it. I was having another option of Micromax MMX353G 7.2Mbps 3G USB Modem Data Card in the same range but Huawei E3121 USB Data Card is much faster (14.4Mbps).Well this is an excellent product having a very nice design and finish but there are two problems associated with it which annoys me a bit.1. Every time I connect to internet, it opens a page referring to huwaei blog in my default browser.2. Its interface needs to be "ad free", I can see ads of huwaei products in the sidebars of "net connect user interface".Although, I think they are minor issue if you are in search of good hardware. huwaei must consider these point too if they want user to buy their products.I personally recommend Huawei E3121 USB Data Card if it is available under 1400 INR.

Huawei is best in data card, and E3121 is first 14.4 Mbps Huawei data card. I bought this data card for my brother , I personally using Huawei E355 (Wi-Fi Dongle) Data Card which is best in its category. soft Wi-Fi - Huawei E3121 have soft Wi-Fi, which means it do not have inbuilt Wi-Fi adapter like Huawei E355. i,e all time when u have to use Wi-Fi, u have to press a Wi-Fi button in dialler, which will convert your laptop a Wi-Fi hotspot. you can not use Wi-Fi function of Huawei E3121 just by connecting it power usb adapter like Huawei E355, but still soft Wi-Fi is very good function. Heating Issue: In compare to Huawei E355, Huawei E3121 is have little heating issue. but this issue is negligible. connectivity: the connectivity of this device is work perfectly, soft Wi-Fi working good, 2g and 3g both connectivity good. I used this product in my laptop with windows 8 pro, no issue found. voice support and SMS support: the calling function is very good option, it support voice call, sms and ussd. you can make call by this data card with the help of your pc mic and speaker or via headphone. it reduce the effort to changing the sim to mobile for calling. Huawei E355 is even approx double in price but do not have voice support. Design: the design of the product is very good its look stylish and cool with white colour.

Asusual flipkart deliver the product in 2 days ( ordered the product on 22nd July and got delivered on 24th July )... Hats off to flipkart team.. Product Feedback : I was using a reliance netconnect+ ( corporate scheme ) 10gb usage for Rs. 730/- which is 2g connection and net speed is very very slow.. If a video is 3 minutes, i can able to see the video in 6 - 8 minutes with every time it buffers. Got irritated with the reliance device.. I have checked the data cards available in flipkart and got confused which one to buy... because this is one time investment and need to get a good product ... After checking all the reviews, i have consider the below 4 products which is cost efficient (1) Micromax MMX377G (2) HuaweiE3121 (3) MicromaxMMX353G (4) this one.. After that i compare the 4 dongles which one is best... and finally i have taken a decison to order this product.. Product got delivered with good packing... I have bought a aircel sim with 3g connection which cost only Rs. 198/- for one GB 3g net usage + unlimited 2g net usage.. Only disadvantage in this product, if you connect in your laptop/desktop it will take 10-15 seconds to get connected, after that the speed is really awesome... Now i am seeing the video without bufferring which i am really happy... And also, instead of spending 730 rs for monthly connection for slow net connection, i will spend only 400 ( 2GB 3g net usage + unlimited 2g netusage ) where i save rs. 330 monthly which is a good deal.. I would strongly recommend this product if you want to buy a data card ...

Hello! Everyone. First of all thanks to Flipkart for superfast delivery. I got my product in 2 days after i placed order. Now coming to the Data Card: Huawei is world's largest and best data card manufacturer, they proved this by their great work. Huawei E3121 comes with 14.4 Mbps download support and 5.76 Mbps upload speed. It has Call and SMS support as well. The best thing i like about this data card is that it has data tracking facility, while many other data card lacks in this department. Performance: Firstly i tried it on idea 2g network, and got disappointed because it was too slow. But after experimenting for sometimes i changed the network mode to WCDMA only which was WCDMA preferred as default and the same data card worked superp giving a download speed of around 2 Mbps. So, i suggest you all to use the WCDMA only network mode, believe me it will boost your speed. I haven't yet tested it on 3g network, but i am pretty sure it will shoot moon. The product also comes with soft wifi which works smooth. A little bit disappointment with the mobile partner dialer, it took considerable time to open & there is heating issue also but this is negligible. And you don't need to bother about it. Huawei has promised some extra freebies which they show on their website that they will provide Antivirus, live tv subscriptions and coupon code but many of us weren't able to find it. But after roaming sometimes i found those freebies just simply click on the "My Zone" present at left bottom and a new webpage will open and all the goodies are available for download. Grab them.