What is a Dongle and How Does It Work

What is a Dongle and How Does It Work?

Last Updated: November 16, 2022By Tags: ,

Wireless internet data cards have completely transformed the online experience. Individuals commonly utilize them all around the globe to meet their everyday requirements. This indicates that people’s reliance on data cards has grown dramatically. 

What Exactly is a Dongle?

A dongle, sometimes known as a data card, is a detachable computer component that stores information. It handles data activities as input, output, storage, transmission, and transformation.

How Do Dongles Function?

A dongle connects to your laptop’s USB port and functions as a portable modem.

When plugged in, the dongle connects to the internet like your smartphone does, providing the user with a 3G, 4G, or 5G connection. These are distinct generations of mobile technology, with 3G being the oldest (and slowest), 4G being the most popular, and 5G being the fastest.

At present, 5G is mostly available in cities and major towns. You may use this Ofgem checker to see whether mobile service is available in your location.

Dongles are not a replacement for a consistent, unrestricted fixed home internet connection. Furthermore, mobile broadband is unsuitable for downloading big amounts of streaming material such as movies or games. Dongles, on the other hand, are great if you’re on the road and want an internet connection beyond the limitations of your mobile phone.

You can use Bajaj Finserv app to pay Airtel postpaid mobile bill online via net banking, debit/credit card, or wallet payment methods. 

below are simple steps to pay your bill online with Bajaj Finserv app;

  • Download Bajaj FInserv app from the Google Play store
  • Login through the email ID registered with your mobile
  • Enter your 10-digit mobile number to ‘Generate OTP’
  • Enter the OTP and click on ‘Proceed’
  • Under the ‘Bills and Recharge’ section, select ‘Mobile Postpaid’
  • Enter your 10-digit mobile number.
  • Verify your operator and circle
  • Enter a recharge amount or select a plan and tap on ‘Proceed’
  • Choose your preferred payment mode and complete the payment

How Does a 4G Data Card Function?

Wireless internet data cards function nearly identically to mobile phones. Data is sent through electromagnetic waves in both cases.

Although the data cards are wireless, the whole procedure combines wired and wireless connections. Yes, you read it right. Initially, routers or access points receive binary data through cables. They then depend on the antennas to convert the binary electrical impulses into electromagnetic waves.

When connected in, wireless internet data cards look for these electrical impulses. These cards will pick up the signal within the broadcast range. These cards then transmit electromagnetic waves and communicate with the nearest regional tower.

All of your information will be validated before the link is established. Finally, the connection is established, allowing you to access the internet. However, if you disconnect your computer’s internet connection, these data cards will immediately cease sharing data. You may use the data card in place of your Wi-Fi router.

Identification Document

They have been divided into the following categories:

ISO/IEC 7816 Interface Contact Cards

They authorize particular services for holders, such as bank account access, payment realization, prepaid mobile services, etc.

Read also: How to check TNEB Electricity Bill Status Online: Everything Explained

Contact Cards with a USB Port

It is a microcircuit-like SIM card that has been separated from the ISO/IEC 7816 card and is housed in a small casing with a reader and USB port.

Cards with No Contact

They are intelligent cards that communicate with the reader through radio transmission. It should be near enough for the reader to complete the essential actions.

These data cards are useful in a variety of ways. They are an excellent alternative if your internet is down or you need to access it fast, particularly if you are not near your router.

The Advantages of Using a Data Card

Aside from these advantages, there are various reasons why everyone should use a data card. So, let us look at the benefits of utilizing them in more depth below:

  • Allows you to access the internet anytime and from any location (even when on vacation, sitting in a café, train, or park).
  • Data cards are portable because they are compact and easy to transport.
  • If your dongle plans allow it, the cards may be used overseas.
  • They are quite simple to use. You have to connect it to your computer’s USB port, and you’re ready to go.
  • Your computers power them, so you don’t have to bother about charging them 24 hours a day, seven days a week.
  • They are handy while working remotely or when your internet connection fails.
  • Data cards may offer an internet connection in regions with sluggish or unstable fixed-line broadband.


  • Because a dongle requires a USB connection on your device, it can only connect to a laptop and not a tablet, ebook reader, or mobile device.
  • They are only capable of connecting to one device at a time. You’ll need MiFi instead if you wish to connect additional devices.
  • More costly than fixed-line broadband and often slower.
  • Download restrictions might be limiting.
  • The portability is restricted to areas with acceptable 4G signals.

To summarise, owning 3G or 4G data cards has several benefits. They are portable, simple to use, and, best of all, allow you to roam about freely. You may even make international arrangements! You should know how to do postpaid bill payments online.

So, what are you holding out for? Today, get a terrific data card recharge deal with amazing cashback deals from Bajaj Finserv that includes unlimited talking and mobile data.

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