What is MiFi, and why might you choose it?
Dan Howdle | March 20th, 2024
The terminology around MiFi is among the most confusing anywhere to be found in the world of consumer telecoms products. The terms 'MiFi' refers to both a non-physical 'personal hotspot' and also to the device providing it. But then, if the device providing it is a mobile phone or tablet, it's no longer MiFi, it's now tethering or a 'personal hotspot'. Still with us? Good. It gets worse.
MiFi, tethering, and personal hostpots, as well as all the types of device that provide them all come under the heading of 'mobile broadband'. However, mobile broadband can also be used to describe both the internet connection you have via your mobile network on your phone or tablet, and the new-ish 5G home broadband packages being offered by the likes of Three and Vodafone. This really is an area where better terminology is needed.
Before we get going then, it's going to be a good idea to give you this quick glossary:
| Term | Primary definition | Secondary definition |
| MiFi | An internet connection you can take with you wherever you go | Devices such as dongles and mobile routers |
| Mobile hotspot | Connection supplied by your mobile phone, tablet, or MiFi device to other devices | - |
| Tethering | Connecting other devices to your phone or tablet to then connect them to the internet | - |
| Mobile broadband | All of the above | 4G or 5G home broadband |
Yes, we know. Even when it's laid out as clearly as possible the exact usage of the terminology is as clear as mud. So, be aware of only this: For the rest of this page, when talking about MiFi we will be referring exclusively to devices such as dongles and portable, personal routers (MiFi devices). Next then, let's take a look at the sorts of MiFi devices you can still get from providers here in 2024.
Types of MiFi device and what they're useful for
MiFi, in case you haven't got that impression already, is not just one thing. For the purposes of this buyer's guide it's a range of different devices, each with their own specific use cases. Mobile broadband – the broader banner under which MiFi is included – also includes things like tethering devices to your mobile phone, so we won't be describing that here.
Here are the most common types of MiFi, whose uses we will describe in more detail a bit further down:
- MiFi routers: Portable devices, sometimes run on batteries, sometimes with mains adapters, designed to be taken with you wherever they are needed. They act as routers and multiple devices can connect to them while they connect to a mobile network to provider them an internet connection
- Dongles: These are MiFi devices designed to provide an internet connection to just one device – more often than not a laptop, since they comprise a small 'stick' that plugs into a USB port
MiFi routers – what are they?
MiFi devices (short for 'My WiFi') are portable routers that allow you to create a wireless internet hotspot wherever they go. These devices function similarly to traditional home routers but are designed for mobility, making them ideal for travellers, remote workers, or anyone who needs internet access on the go.
Using a MiFi device is straightforward. Insert a the SIM card the provider will also send you into the device and power it on. Once activated, the MiFi device connects to your provider's network, enabling you to access the internet wirelessly through WiFi-enabled devices such as smartphones, tablets, laptops, or even gaming consoles.
The four UK network providers – Three, O2, Vodafone and EE – all offer some form of MiFi device.
Dongles – what are they?
Dongles – yes, funny word, we know – are also sometimes known as 'USB modems' or 'data sticks'. We prefer dongle, and so do UK providers. These compact devices plug directly into your computer's USB port and use a SIM card to connect to the associated mobile network, allowing you to access the internet without the need for a fixed broadband connection or WiFi network – very useful for those with laptops who are always on the move.
The need for dongles is declining as time goes on and more laptops come with a SIM card slot and mobile network connectivity built in. And of course the option to tether your laptop to your mobile and get an internet connection that way is also available provided your laptop is Bluetooth capable.
The four UK network providers – Three, O2, Vodafone and EE – all offer dongles.
Advantages of MiFi devices and dongles over wifi and tethering
If you understand what MiFi devices and dongles are exactly, and what they do (covered in the previous section), you may be wondering what the point of them is in an ege when wifi is available in many locations, and others can be bridged by your phone's tethering ability – especially since providers have largely removed any limits on the amount of data you can use via tethering.
Well, you may or may not be surprised to hear that there are some specific instances where a MiFi router or dongle may be a much better choice than any other option. They are:
- Greater flexibility: MiFi devices offer dedicated internet access, allowing you to connect multiple devices simultaneously without draining your phone battery
- Improved coverage: MiFi devices often have stronger antennas and better reception than smartphones, providing more reliable connectivity in remote or congested areas
- Enhanced security: MiFi devices can offer encrypted connections, reducing the risk of data breaches compared to public Wi-Fi networks. This can be especially true and useful if you work in a role where data leaks and hacking might be a real threat or danger
- Dedicated data plans: Many mobile providers offer specific data plans for MiFi devices with higher data allowances or better value, catering to heavier internet users
- Convenience: MiFi devices are portable and lightweight, easily fitting into pockets or bags, making them convenient for travel or working remotely
- Reduced impact on phone battery: Using a MiFi device instead of tethering can extend your phone's battery life, as it doesn't rely on your phone's resources for internet sharing
- Shared internet access: MiFi devices allow you to share internet access with others without needing to give out your phone's hotspot password, maintaining your phone's privacy and security
How to choose the right MiFi deal
There are several factors you'll need to consider when choosing an appropriate MiFi provider and device. They are:
How much data do you need?
It may be tempting to go for an unlimited SIM, and fine if you wish to do so, but it's worth bearing in mind that most people – even those who plan to use MiFi a lot – don't need it and so could potentially save a little money by selecting a lower limit. Working out what you need can be hard. Our advice is pick a low limit, then if you hit or exceed it, upgrade to the next limit up. All providers will allow you to do this quickly and easily.
What type of device do you need?
Decide whether a MiFi device or dongle is the best option based on your portability and connectivity preferences. MiFi devices offer greater flexibility with built-in batteries and the ability to connect multiple devices simultaneously, while dongles are more compact and convenient for occasional use, and supply a connection to just one device – generally a computer or laptop.
Network coverage
When choosing a provider be sure to check its coverage map, inspecting the places you're going to be using your MiFi device most often. This can be tricky, especially if some of your usage will be on trains or other transport. So take your time here to find the best fit.
Pricing and contract terms
Compare the pricing and contract terms offered by different providers. Consider monthly costs, contract lengths, data allowances, and any additional fees or charges such as setup fees, early termination fees, or excess usage charges. Choose a plan that offers the best value for your budget and usage needs.
