The Huawei AI Cube on Three offers unlimited 4G home broadband with a built-in Amazon Alexa speaker for £25/month.

Three is currently offering a Huawei AI Cube B900 router with unlimited data for £25/month. The router, which also doubles up as an Amazon Alexa smart speaker, gives you high-speed 4G broadband on up to 64 devices. This is delivered without the need for a phone line or cable, making it a possible alternative for fixed home broadband.

In this article, we’ll review the Huawei AI Cube B900 router from Three, including the price plans available and the capabilities of the device. We’ll also compare it to alternative devices like the HomeFi router from Three which costs only £22/month.

AI Cube Price Plans

For many people, 4G technology now provides a viable alternative to fixed home broadband that’s delivered through a phone line or cable. As it uses 4G mobile network technology, you’ll get a high-speed broadband service that isn’t limited by the speeds you can get through a phone line or cable. You can also get your broadband connection set up quickly without an engineer visit, and there’s the flexibility to bring your broadband connection with you to other places.

At present, Three offers a choice of two 4G-powered home broadband routers: the HomeFi B311 router which costs £22/month and the AI Cube B900 which costs £25/month.

As the more expensive of the two devices, the AI Cube B900 supports higher download speeds on 4G (up to 300Mbit/s rather than 150Mbit/s). It also supports dual-band Wi-Fi and doubles up as an Amazon Alexa smart speaker. This means you can use the AI Cube to control smart home devices and for listening to music.

The Huawei AI Cube B900 is available on two price plans at present. There’s an unlimited data plan costing £25/month on a 24-month contract. Alternatively, a shorter 12-month plan is also available costing £30/month with a £29 upfront fee:

Data Allowance Contract Length Upfront Price Monthly Price
Unlimited Data 24 month contract £0.00 £25/month
Unlimited Data 12 month contract £29.00 £30/month

The AI Cube is also available on a range of Pay As You Go plans from £210.

See all Three AI Cube Deals →

If you replace your fixed line broadband connection with a AI Cube router, it may be possible to cancel your landline connection. This can save you around £20/month, offsetting much of the cost of getting an AI Cube router. You’ll need to find an alternative way to make phone calls if you do this (e.g. using your mobile phone instead of a landline, or making internet-based phone calls using your AI Cube).

Huawei AI Cube B900

The Huawei AI Cube B900 is Three’s higher-end 4G home broadband router. The router supports Category 6 LTE speeds (up to 300Mbit/s download and 50Mbit/s upload). However, most users will get a more realistic download speed of around 30Mbit/s depending on location. The AI Cube’s home broadband service can be shared with up to 64 devices at any given time using the dual-band wi-fi connection. There’s also an Ethernet socket for connecting a wired device to your network.

In addition to working as a 4G router, the AI Cube also doubles up as a smart speaker solution. It has four built-in microphones with far-field voice recognition and a 360° speaker. This means you can use it in the same way as you would an Amazon Echo (for instance, to control your smart home devices, to make internet-based phone calls and to listen to music through online steaming services). The AI Cube’s interface allows you to control everything by voice, simply by asking Alexa to do something for you.

In our opinion, there are some major benefits to choosing the AI Cube over the regular HomeFi router. For starters, you’ll get Category 6 LTE support giving maximum download speeds of up to 300Mbit/s (this compares to 150Mbit/s on the HomeFi). You’ll also get dual-band wi-fi support (including 802.11ac wi-fi at 5GHz) and the ability to connect up to 64 devices at one time. Combine this with the Alexa-powered smart speaker and you’re getting quite a lot more for your extra £3/month.

The AI Cube can be used to control your home and to listen to music, in addition to being a router.

On the other hand, being a 2-in-1 device, there are some trade-offs to be made in the AI Cube’s design. For instance, the optimal location to place a smart speaker in your home is normally fairly centrally in the living room. This may sometimes differ from the optimal location for a 4G router which is often closer to a window sill (this is to maximise the signal strength of your 4G connection). The AI Cube also lacks support for an external SMA antenna, meaning this option isn’t available to you for improving the coverage on your device.

For customers living in an urban area with fairly good mobile coverage, the trade-offs required to use an AI Cube are probably fairly small (you can benefit from faster speeds and the Alexa capabilities, and you probably didn’t need to use the external antenna capabilities anyway). However, for customers living in a rural area with much poorer coverage, the traditional router will probably be a much safer bet.

The following table shows a side-by-side comparison of the AI Cube B900 and the HomeFi B311:

Huawei AI Cube B900 Huawei HomeFi B311
Mobile Connectivity
4G Speeds: Up to 300Mbit/s download
(Category 6 LTE)
Up to 150Mbit/s download
(Category 4 LTE)
4G Bands: LTE Bands 1, 3, 7, 8, 20, 32 & 38 LTE Bands 1, 3, 7, 8 & 20
External Antenna Connector: No Yes, external SMA antenna
Home Network Connectivity
Wi-Fi Connectivity: 802.11a/b/g/n/ac
(2.4GHz & 5GHz dual-band)
(2.4GHz only)
Wi-Fi Devices: Up to 64 devices Up to 32 devices
Ethernet: 1 Gigabit Ethernet port 1 Gigabit Ethernet port
Other Features: 360° smart speaker with Amazon Alexa
Price: £25/month for unlimited data £22/month for unlimited data

You can see the full specifications for Huawei’s AI Cube B900 on Three’s website.

As an alternative to both of the above, you can also consider buying a separate, unlocked router. For instance, the Huawei B525 router is available for around £120. Like the AI Cube, it supports Category 6 LTE speeds (up to 300Mbit/s download speeds) and dual-band 802.11ac wi-fi on up to 64 devices. It also has 4 Gigabit Ethernet sockets, a RJ11 telephone socket and a SMA socket for you to connect an external antenna to the router. This can be combined with an unlimited data SIM card from Three, giving the best of both worlds (higher download speeds without needing to compromise on coverage).

You can combine the Huawei B525 router with something like a standalone Amazon Echo speaker. This is available for about £90. A standalone Amazon Echo can be placed anywhere in your home: it isn’t necessary to balance this against where you’ll get the best 4G network coverage.


The closest alternative to an AI Cube is Three’s regular HomeFi service. This costs £22/month with unlimited data. The HomeFi can also be purchased on a range of shorter price plans, and can be used on a Pay As You Go basis.

The following table shows a list of available price plans for the HomeFi:

Data Allowance Contract Length Upfront Price Monthly Price
Unlimited Data 24 month contract £0.00 £22/month
1GB Data (1 month validity) Pay As You Go £59.99 Top-up as required*
3GB Data (3 month validity) Pay As You Go £65.99 Top-up as required*
12GB Data (12 month validity) Pay As You Go £89.99 Top-up as required*
24GB Data (24 month validity) Pay As You Go £109.99 Top-up as required*

* Customers with a HomeFi on Pay As You Go can use the Data Reward plan. This offers 200MB of free data per month, with further usage costing 1p/MB.

For more information, please read our in-depth review of the HomeFi service or see the HomeFi on Three’s website.

Other Mobile Networks

If you’d like to look at 4G-powered home broadband solutions from other mobile networks, you can also consider the 4GEE Home Router or Vodafone’s GigaCube.

EE offers an Alcatel produced 4G Home Router from £35/month on an 18-month contract. However, this only includes 50GB of data on the most basic price plan, whereas most users will want to choose a plan with around 100GB or 200GB of data per month. This is likely to cost you substantially more (in the region of £45 to £50 per month):

Data Allowance Contract Length Upfront Price Monthly Price
50GB Data 18 month contract £0.00 £35/month
100GB Data 18 month contract £0.00 £45/month
200GB Data 18 month contract £0.00 £50/month
300GB Data 18 month contract £0.00 £80/month
500GB Data 18 month contract £0.00 £100/month

For more information, read our full review of EE’s 4G home broadband service or visit the EE website.

Meanwhile, Vodafone’s GigaCube service comes with a Huawei B528 router. This has a similar cylindrical design to the AI Cube B900 router but it lacks the Amazon Alexa smart speaker capabilities. It is also restricted to only supporting up to 20 devices at a given time, whereas the AI Cube allows you to connect up to 64 devices.

The GigaCube is available from £35/month on an 18-month contract:

Data Allowance Contract Length Upfront Price Monthly Price*
60GB Data 18 month contract £0.00 £35/month
60GB Data 1 month contract £120.00 £35/month
100GB Data 18 month contract £0.00 £45/month
100GB Data 1 month contract £120.00 £45/month
200GB Data 18 month contract £0.00 £60/month
200GB Data 1 month contract £120.00 £60/month
300GB Data 18 month contract £0.00 £80/month
300GB Data 1 month contract £120.00 £80/month

For more information, read our full review of the Vodafone GigaCube or see Vodafone’s official website.


Three offers 99.8% population coverage on its 4G network and 98.3% population coverage on its 3G network.

Before purchasing an AI Cube on Three, it’s strongly recommended that you check the coverage in your area. You can do this by entering your postcode on Three’s online coverage map.

Check Three Coverage ( →

If you’re travelling abroad, it’s also possible to use the AI Cube in other countries through the Go Roam offer.

For more information about the coverage on different mobile networks, please see our in-depth guide to mobile network coverage in the UK.

More Information

For more information about the AI Cube and Three’s mobile broadband service, please see Three’s official website.

Your Comments 27 so far

We'd love to hear your thoughts and any questions you may have. So far, we've received 27 comments from readers. You can add your own comment here.

    • Hi Arthur,
      Thanks for your comment. Yes, you can use the AI Cube’s wi-fi connection to watch internet TV on your other devices (e.g. on your laptop, tablet, smart TV, etc). You obviously won’t be able to watch it on the device itself as it doesn’t have a screen.
      Hope this helps,

    • Hi Matt,
      Thanks for your comment. The AI Cube is designed to connect to Three’s 4G network and produces a Wi-Fi signal for your other devices to connect to. It can therefore replace your current home wi-fi network, so you can cancel whatever home broadband provider you’re using at the moment.
      I believe (though I’m not 100% sure) that it is possible to connect the AI Cube to your existing home wi-fi network and to use it purely as an Alexa smart speaker solution. However, to be totally honest, you’d be much better off choosing something like the Amazon Echo. It’s far cheaper than an AI Cube as you won’t need to pay for the 4G home broadband feature.
      Hope this helps,

    • Hi Joe,
      Sadly, that was a time-limited offer that Three ran for a couple of days in April. The price has since gone back up to £25/month.

  • John Catterall said:

    The Huawei AI Cube B900
    will there still be support for the Huawei AI Cube from Three after the Trump ban on Huawei products and the likes of Google , UK ISPs etc also banning them ,,,
    l am looking to switch to 3 WiFi for my home internet use …l am at present a 3 Mobile user , so it makes sense to have all my eggs in one basket

    • Hi John,
      Thanks for your comment. That’s a great question about the Huawei AI Cube. Whatever happens, the functionality of your existing router shouldn’t change or break. Therefore, I wouldn’t worry too much about it! It’s possible that you’ll stop getting software updates for the device, but I think this is probably more applicable to the smartphones rather than the routers.

  • Just started using the Huawei A1 Cube on Three. On Wifi the first day it was showing speeds of around 10mbps, yesterday I connected it with an Ethernet cable and I am lucky if it shows 2mbps at one point it dropped below 1mbps. Any advice is there something I am doing wrong? We tried walking about with the cube and nothing changed. Help please, if this does not drastically improve It will be coming back to you.


    • Hi Vince,
      Many thanks for your comment. I’d definitely recommend reading some of the other comments on this blog post, and also over on my blog post about the HomeFi B311 router. There are a lot of things I’d test out, including the placement of your 4G router. Normally, it’s best to place it close to a window (ideally on an upper floor of your house and facing in the direction of your nearest phone mast). Additionally, a 4G antenna will greatly improve download speeds for many people, but it isn’t possible to use this with an AI Cube router (consider something like the Huawei B525 instead, in combination with a standalone Amazon Alexa speaker).
      Hope this helps,

  • Hiten Patel said:

    Thank you Ken for putting up the review of the Three AI cube , which i have purchased, and have to say i love it , great download speeds, nice speaker, able to connect via the ethernet port to another router (asus blue cave) giving more ethernet ports. have coonected to my nest heating, hue lights , and connect rest of my devices. I got it for 24 pounds per month for unlimited data . highly recommended

    • David Townsend replied:

      What sort of up and down speeds are you getting on the system now? Could you run Ookla Speedtest on it and report back please?

      Many Thanks
      Dave T

      • Hiten Patel replied:

        Hi Dave , I’ve used the Ookla speed test and am getting 55Mbps downloads and 20Mbs uploads . Now this does vary but on average this is what I’m getting. Hope this helps.

        Many thanks

  • Hi Ken, I have recently purchased and installed a Huawei B525s-65a router for home use. In Wifi setup it shows four SSID’s (two for 2.4GHz & two for 5GHz) .Please could you explain the functions of these additional SSID’s.
    I have also found the Huawei technical information online for this router to be extremely poor and I would like to understand the potential of this router.
    Please could you offfer any links to relevant quality reading for the router above that would help me achieve this.

    • Hi Gerard,
      Thanks for your comment. Unfortunately, your best bet would probably be the manual or instruction guide provided by Huawei! With regards to the SSIDs, I understand there are separate SSIDs for the wi-fi networks operating at 2.4GHz and 5GHz. I’m not sure why there are two SSIDs for each frequency however…

  • Anyone know if I can use it without a SIM card i.e. simply connecting it to another wi-fi network as you would an Echo?

    I’m thinking about getting one, however I’m just considering how I might use it if after 24mths I decide I don’t want 4G broadband anymore. Rather than it become obsolete, it would be good to use it as another alexa device.

  • Hey
    I just got one AI Cube on Wednesday (4/4) and speed of internet is horrible. Mostly internet is so slow that is showing me that connection was lost. I have to reset it at least few times a day…so my experience is more than bad.

  • I’m currently looking at buy the Huawei AI Cube B900 all I am concerned about is the download speed, as an avid gamer I need this to be good as possible and be able to handle 2 Xbox’s on simultaneously would you recommend that this is a suitable option?

    • Leon Hunter replied:

      I’m no expert bit I’d avoid these options for gaming. Even if you get good download speeds the latency will be twice as slow as a normal broadband connection.

  • Pretty impressed with my AI Cube so far, but it won’t play music from Spotify – Alexa tells me it isn’t supported by this device 🙁

  • Can you connect smart tv’s to this product? I also have a Sonos speaker. Would this connect to 4g internet rather than broadband?

    • Hi Jade,
      Yes, you can indeed connect your Smart TV and Sonos Speaker to the AI Cube. It just produces a wi-fi network that your other devices can connect to (only behind that, it uses 4G technology to connect to the internet, rather than a landline or cable like traditional home broadband).
      Hope this helps!

  • Jason Heeney said:

    I just got one of these on Tuesday (26/03) and was shocked by the download speeds, I generally range from 52Mbit/s to 70Mbit/s download speeds, I was expecting it to be in the region of 25-30Mbit/s.

    • Hi Jason,
      That’s really impressive stuff. It’s great to hear that you’ve been getting good download speeds with the AI Cube!

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