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Home  >  Computers  >  Network Components  >  Data cards  >  Huawei Data cards  >  Huawei E3121 3G Data Card (White)

Latest version available:

Rs. 1899 31% OFF
Rs. 1295
Buy Huawei E3121 3G Data Card: Datacard
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Huawei E3121 3G Data Card

1 Year Huawei India Warranty and Free Transit Insurance. See Details
Rs. 1990 10% Off
Rs. 1790
Inclusive of taxes
(Free home delivery)
69% positive feedback [?]
(23 ratings)
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Huawei E3121 3G Data Card (White) Price: Rs.1790

Key Features

  • Sleek & Compact Design
  • 14.4 Mbps
  • Soft Wi-Fi
  • Plug and Play
  • Better Coverage
  • Also Supports Dual Band
  • Tri Band or Quad Band SIM Cards
  • 2G / 3G SIM Card

Embrace technology using this advanced Huawei E3121 3G Data Card for a versatile internet connectivity option whether you’re in one place or travelling.

14.4 Mbps

Designed to deliver ultra-fast speeds of 14.4 Mbps, you are heading for an unbelievably fast uninterrupted data connection to execute all your work without any hassle.  Experience blazing speeds with no slowdown whether simply surfing the net or doing your official work.

Soft Wi-Fi

Packed with innovative features, this Huawei data card is designed to make your laptop as a WI-Fi hotspot for up to 5 other devices to connect on to. Share internet and be connected in a simply incredible manner.

Plug and play

While most data cards require a prior installation this device is a simple plug-and-play. Plug the device into your USB port and begin using it straightaway with no settings or tweaking.

2G/3G SIM card

The device is designed to support both SIM cards that function on 2G and 3G networks for accessing the internet.

Supports Dual Band/Tri Band or Quad Band SIM cards

Whether you have a Dual, Tri or Quad band SIM card, this data card supports all of the three making it convenient to carry it with you around the world.

Better Coverage

Manufactured to perfection, this device bears maximum coverage of networks of all service providers delivering better connectivity hence offering uninterrupted usage anywhere.

Sleek and compact design

Built in a sleek yet compact design, this drive can be easily slipped into your pocket or laptop bag hardly requiring any space making it convenient to carry it around wherever you go.

Specifications of Huawei E3121 3G Data Card (White)

Brand Huawei
Model E3121
Part Number E3121
Form Factor USB Dongle
In The Box Data Card, Warranty Card, Quick Start Guide
Color White
System Requirements
Operating System Windows: XP, Vista, 7, 8, Mac OS X: 10.5, 10.6, 10.7, 10.8
SIM or UIM Support 2G / 3G SIM
Connectivity Speed
GPRS Class 4, 85.6 Kbps
HSDPA 14.4 Mbps
UMTS(3G) 384 Kbps
EDGE 237 Kbps, Class E3
UMTS(3G) 2100 MHz
GSM (EDGE/GPRS) 1800 MHz, 1900 MHz, 850 MHz, 900 MHz
Memory Support
Memory Card Support Slot microSD Card
Memory Capacity 32 GB
Additional Features
External Interface USB 2.0
Voice Support Call Support
Antannae Type Internal
Power Supply USB
Setup Installation Plug and Play
SMS Support Yes
Other Features Faster Downloads, Soft Wi-Fi, Connection Limited Upto 5 Devices, Experience Cloud Technology with 2 GB of Free Storage Cloud Drive, Better Coverage, Chipset: Balong
Width 27 mm
Height 85.5 mm
Depth 12.3 mm
Weight 50 g
Warranty Summary 1 Year Domestic Warranty
Service Type Carry In
Not Covered in Warranty Physical Damage Cases will not be Entitled for Warranty
Domestic Term 1 Year
Please note: All products sold on Flipkart are brand new and 100% genuine

Reviews of Huawei E3121 3G Data Card

Average Rating
Based on 1681 ratings
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Rate it now.

Most Helpful Reviews (5 of 560)

05 June 13
Slowest and pathetic delivery by FirstFlight Couriers

Product seems to be good from my 3 days of usage. I cannot comment more on product at this moment, since it is too early to judge it. Flipkart really made me dissappointed by its slowest product delivery(took 7 days+) and I had to travel till courier office to collect the product(hats off to firstflight couriers for their poor and pathetic service).

Flipkart support had no clue about the product delivery till the 5th day. Till that, it was marked in firstflight portal like, the product is in transit from Bangalore to Trivandrum city, which is hardly 550kms. Even if the firstflight courier was using headload workers to carry the product from Bangalore to Trivandrum, they would have able to deliver the product in 4 days maximum. I had to call up flipkart support team and different offices of firstflight several times to get the product delivered at the firstflight office. When I called firstflight courier on 5th day, their excuse was that, the delivery is delayed because of bad weather(I'm not sure of any tornado\hurricane was there in the way between trivandrum and bangalore, and yeah, I heard from news that, some tornado has hit some states of USA). My fellow users at FlipKart, please beware of FirstFlight courier team.

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65% of 31 users found this review helpful.
22 May 13
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certified buyer
huawei E3121

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.

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100% of 14 users found this review helpful.
25 May 13
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certified buyer
Great offer for datacard customers.

First of all I would like to thanks Flipkart for providing promising delivery of this product to me. This product reaches to me in 3 days and the best part is that the whole detail about shipping is trackable.
I recommend all to buy this product from flipkart because I firstly booked this product from other shopping site which delays it to 6 days and thus I have to cancel it and went for flipkart. It deliver your product ontime and thats why its the most reliable and trusted shopping site in India. I am really impressed by its service. :)

Now coming to the Huawei E3121 3G data Card performance.

This dongle is quite nice in design but its software takes longer time to start as compared to other datacard but on the other hand, its software has much more functionality and applications than the others.
It provides detailed statistics of your data expenses and thus it is easy for you to manage it.


Speed is a subjected to your location, your data plan, time of use and the strength of signals.Thus I am not giving any suggestions that this dongle will gives you very high speed or blah blah like others. Rather i would say that it will give you the maximam speed your network provider can give to you.

Cons: It heats too early and software starts slowly.

Nice features:

1) Software wifi : Because of this feature , you do not need to download pirated software to make your lappy a hotspot.

2) FREE 1 Year AVG Antivirus : ya this is not given in details by flipkart but it is true.
This is also a reason why I buy this datacard because I need a new original antivirus to make safe my pc.

3) Three month live tv subscription pack by nexGTv

4) Watch bigflix for one month.

5) Get double value coupons on every recharge by

So for what are you waiting for.

Its not just a datacard.Its a complete package.

Just grab this opportunity before this product sold out.

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78% of 18 users found this review helpful.
07 July 13
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certified buyer
Amazing Product From Huawei

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.


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.

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82% of 11 users found this review helpful.
26 July 13

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 ...

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8 of 8 users found this review helpful.

Most Recent Reviews

View all
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certified buyer
Good but sometimes stops working

It is a great product. But after 2-3 months of purchase i started facing problem.
Sometime even it stops detecting the SI...

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15 April 14
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certified buyer
Good Product .

Good Product , Worth for money

But only problem , the datacard (Huawaei) software is taking sometime to launch, o...

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15 April 14
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certified buyer
Good product

working fantastically
Dongle does not have wifi module in built.That is why it is called soft wifi.
I probably mis...

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14 April 14
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certified buyer
its good............

its a very good product i liked it as its speed is very good on every product.but its get heat very earlier and its software ta...

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13 April 14
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certified buyer
one of the best data card

it is worth buying. it is fast enough for 2g networks and works best with 3g networks. also supports mmc card upto 32 gb. its g...

Read More
12 April 14
     Huawei E3121 3G Data Card (White) Price in India: Rs. 1790


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