What is MiFi (Mobile WiFi)?

Mobile Wi-Fi (sometimes called mobile broadband or MiFi) refers to portable, pocket-sized devices that can broadcast a broadband connection using 3G or 4G, allowing you to connect other devices such as laptops and tablets to the internet, even if there’s no fixed broadband or a power supply available.

Much like a phone or a tablet, mobile Wi-Fi devices can be bought outright or on a Pay Monthly contract.

What MiFi dongles are available?

At the time of writing, Three offers just one MiFi device, but it’s a good one. Dubbed the Huawei 4G+ MiFi, it supports download speeds of up to 300Mbps, can get up to 16 devices online at once, and has a sleek design and good battery life.

Three MiFi dongles

Device Key Features

Huawei 4G Plus MiFi

Huawei 4G+ Mobile WiFi

4G Mobile Broadband


Speeds up to 300Mbps

Connect up to 16 devices

What is a Pay Monthly MiFi contract?

A Pay Monthly mobile Wi-Fi contract is similar to a phone contract in that it incurs a fixed monthly fee for a set period of time (1, 12 or 24 months). For that money you get not just the mobile Wi-Fi device but also a monthly data allowance.

The advantage of taking out a pay monthly contract is that you don't have to pay as much upfront for your MiFi device, or in many cases anything at all, which can make it a lot more affordable if you don’t have a lot of money to spare.

All contracts come with an inclusive data allowance to use each month and they are taken out over a choice of 24 months, 12 months or just 30 days, after which you are free to switch to a SIM Only deal or Pay As You Go.

If you don’t already have a mobile broadband device than a Pay Monthly contract is often the best option.

Why choose Three?

Three offers a great mobile Wi-Fi device and also has a widespread 4G network which covers most of the UK population. Its prices are also reasonable, and that’s not all.

All Pay Monthly MiFi plans on Three come with great extra benefits, including:

  • 4G and 5G at no extra cost - all plans come with 4G and 5G at no extra cost, but if you don’t have a 5G device or aren’t in a 5G area you can still make use of Three's superfast 3G and 4G networks.
  • Free roaming abroad - use your internet abroad at no extra cost in 71 Go Roam destinations, saving you loads on roaming fees.
  • Award winning – Three has won a number of awards, including being voted the Best Network for Data at the Uswitch Awards 2021 and the best network for roaming in 2020.
  • Unlimited data - Three offers mobile broadband plans with unlimited data, so you can browse and stream as much as you want.

Are there any downside to a Pay Monthly mobile Wi-Fi contract?

You don’t have the freedom to change or cancel your plan whenever you want when on Pay Monthly, and if you already have a mobile broadband device that you’re happy with there’s really no need to get another, but for everyone else Pay Monthly tends to be a strong choice.


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