BT Mobile provides a 4G service from £7.50 per month if you’re a BT Broadband customer, using 4G coverage from EE.

In the UK, BT Mobile offers a 4G mobile service with 99% population coverage from EE.

Customers living in a BT Broadband household can get an entry-level tariff from £7.50/month with unlimited minutes, unlimited texts and 500MB of data included (the price includes a £5/month discount for BT Broadband customers). Customers of BT Mobile will also receive unlimited BT Wi-Fi and will have a monthly spend cap on their plan.

In this article, we’ll review the BT Mobile service. We’ll start by looking at BT’s mobile price plans including SIM Only, Family SIM and Pay Monthly with a new handset. We’ll then look at some of the key features of BT Mobile including BT Wi-Fi, monthly spend caps and BT Sport. Finally, we’ll compare BT Mobile to rival networks before discussing the level of coverage you can expect and how to keep your existing phone number.

Pricing & Tariffs

At present, BT Mobile offers three different types of price plan:

  • SIM Only: Starting from £7.50/month on a 12-month contract, you can order a BT Mobile SIM card to use in your unlocked smartphone.
  • Family SIM: If multiple members of your family take a SIM card from BT Mobile, you can save up to 37% on multiple SIMs with the Family SIM offering.
  • Pay Monthly Handsets: You can also buy a brand new smartphone directly from BT Mobile. Prices start from £14/month on a 24-month contract.

SIM Only

BT Mobile SIM CardIf you already have an unlocked smartphone that you’re happy to use on BT Mobile, there are currently five BT Mobile SIM cards you’re able to choose from. Each SIM card is offered on a 12-month contract, with a discount of £5/month for customers living in a BT Broadband household.

The following table shows BT Mobile’s current line-up of SIM-only deals:

BT MobileUnlimitedUnlimited1GB£9.00
inc. £5 discount
BT MobileUnlimitedUnlimited8GB£12.00
inc. £5 discount
BT MobileUnlimitedUnlimited20GB£15.00
inc. £5 discount
BT MobileUnlimitedUnlimited25GB£20.00
inc. £5 discount
BT MobileUnlimitedUnlimited40GB£25.00
inc. £5 discount
BT MobileUnlimitedUnlimited100GB£30.00
inc. £5 discount

The prices shown in the table above include a £5/month discount for people living in a BT Broadband household. You don’t necessarily need to be the BT Broadband bill payer: you just need to be living in a household with BT Broadband.

Occasionally, there are promotions on where you’ll get extra data or a free gift voucher when signing up for a BT Mobile SIM card. You can check to see what offers are currently available by visiting the BT Mobile website. Typically, BT splits their SIM-only line-up into five different tariffs:

  • The Great Value Starter Plan (Typically with 500MB data)
  • The Essential Plan (Typically with 3GB data)
  • The Perfect All Rounder Plan (Typically with 6GB data)
  • The Ultimate SIM Plan (Typically with 15GB data & Extra Speed 4G)
  • The Max Plan (Typically with 25GB data & Extra Speed 4G)

Family SIM

If there are multiple people in your family wanting to join BT Mobile, BT’s Family SIM offering can be worth a look. Compared to getting individual SIM cards on separate plans, you can save up to 37% with the Family SIM offer. You’ll also get extra flexibility with a 30-day contract on additional SIM cards, and a single combined bill for all of your usage.

For instance, if each person in your family were to choose the 3GB SIM card (“The Essential Plan”):

  • The first SIM card will cost £12/month on a 12-month contract (the same as a standard BT Mobile SIM card)
  • The second SIM card will cost £8/month on a 30-day contract
  • The third SIM card will cost £7/month on a 30-day contract
  • The fourth SIM card will cost £6/month on a 30-day contract
  • The fifth SIM card will cost £5/month on a 30-day contract

The total cost of having five Family SIM cards would be £38/month (saving £22/month compared to getting five separate SIM cards).

On Family SIM, you’ll get increased flexibility as additional SIM cards are on a 30-day contract. You’ll also get increased visibility with a single combined bill, whilst still allowing each user to have their own allowance and monthly spend cap.

Get BT Mobile Family SIM →

For more information, please see the BT Mobile website or read our in-depth review of the Family SIM offer.

Pay Monthly Handsets

If you’d like to buy a new smartphone, BT Mobile offers a range of handsets on a 24-month contract. At the time of writing, the latest handsets from Apple and Samsung are available on BT Mobile. You can also buy a selection of of smartphones from Google, Nokia and Sony.

There are a choice of five tariffs for Pay Monthly handsets:

  • The Starter Plan (1GB data)
  • The Essential Plan (3GB data)
  • The All-Rounder Plan (6GB data)
  • The Premium Plan (15GB data)
  • The Ultimate Plan (30GB data)

All five tariffs come with unlimited calling and unlimited texting. The exact monthly price will depend on which handset you choose. You may also need to pay an upfront fee for the handset.

View BT Mobile Handsets →

You’ll often be able to get a free gift voucher when ordering your handset online – see the BT Mobile website for a list of currently available deals. As previously, there’s also a discount of £5/month for people living in a BT Broadband household.

Pay As You Go

Top Up LogoUnfortunately, BT Mobile doesn’t yet offer any Pay As You Go tariffs. If you’re looking for a Pay As You Go deal, you can order a SIM card directly from EE instead (EE is also a part of the BT Group).

Alternatively, if you’re looking for a cheaper deal that also uses coverage from EE, we’d recommend ordering a free ASDA Mobile SIM card. You’ll pay just 8p/minute, 4p/text and 5p/MB and there’s no need to top-up your phone every month. There are also some great value bundles (e.g. 600 minutes, unlimited texts and 2GB of internet for £10/month).

For more information and for a complete overview of available deals, see our guide to the UK’s best value Pay As You Go SIM cards.

Key Features

BT Broadband Discount

BT Broadband
Customers with BT Broadband in their household will get a £5/month discount on all BT Mobile tariffs.

Customers with a BT Broadband connection in their home will get a £5/month discount on all BT Mobile tariffs. You’ll need a consumer broadband package to qualify for the discount: this can either be standard home broadband or BT Infinity fibre broadband.

It’s not necessary to be the BT Broadband bill payer to benefit from the £5/month discount. You simply need to be living in a household with a BT Broadband connection, and there’s no limit on how many people can benefit from the discount in each household.

Get BT Broadband for a £5/month BT Mobile discount →

If you’re living in a household that uses a different broadband provider, it’s still possible to sign up to BT Mobile at the full price. In this case, you won’t benefit from the £5/month discount. In some cases, however, it may work out to be cheaper overall if you switch to BT Broadband at the same time as joining BT Mobile.

BT Wi-Fi

BT Wi-FiCustomers joining BT Mobile will get unlimited access to BT Wi-Fi hotspots (previously known as BT Openzone).

There are over 5 million BT Wi-Fi hotspots across the UK making it one of the most extensive nationwide wi-fi network providers. Locations with a BT Wi-Fi hotspot include shopping centres, train stations, cafés, restaurants, service stations and more. You can enter your postcode on the BT Wi-Fi website to find nearby hotspots.

A typical standalone subscription to BT Wi-Fi would cost you £15/month on a 12 month contract.

Monthly Spend Caps

On BT Mobile, there’s a monthly spend cap included on all tariffs. This helps you to control your spending, preventing “bill shock” and unexpectedly large charges on your phone bill.

When signing up for BT Mobile, you’ll be assigned an initial spend cap of between £5 and £45 (the exact amount will depend on the result of your credit check). Your spend cap will only apply to out-of-allowance usage. So, for instance, if you had a £10 per month tariff with a £5 per month spend cap, you’d be guaranteed to never pay more than £15 per month.

After signing up, you can change your monthly spend cap through the My BT website. Your monthly spend cap can be set to any amount between £5 and £200 (larger spend caps may be subject to credit check status).

On BT Mobile Family SIM, each user will have an individual spend cap for their SIM card. By default, only the billpayer is able to adjust the spend cap on SIM cards attached to the account (this makes it perfect if you’re giving the SIM card to your children). However, it’s also possible to delegate control over spend caps to individual users if desired.

For more information about monthly spend caps, please see our in-depth article about capped contracts.

BT Sport

BT Sport Mobile Service
With BT Sport, you can watch live sporting action on your smartphone.

Customers on BT Mobile choosing a plan with at least 6GB of data are able to add free access to the BT Sport mobile application. This allows you to watch live sporting action including from the Premier League, FA Cup and MotoGP.

The BT Sport app is available for iPhone and Android devices. When using the app on 3G or 4G, usage will count as normal towards your monthly download allowance. For this reason, it’s normally best to use the BT Sport app on wi-fi whenever this is possible.

For more information, please see the BT Sport website.

Comparison to Alternatives

In the following section, we’ll compare BT Mobile’s SIM-only deals against rival offerings from other mobile networks.

The Great Value Starter Plan

5 Pound Note

BT Mobile’s “Great Value Starter Plan” starts from £7.50/month for customers living in a BT Broadband household (£12.50/month for customers not living in a BT Broadband household). For this, you’ll get 500MB of data along with unlimited minutes and unlimited texts.

On other mobile networks, cheaper deals might be available (e.g. some other mobile networks offer 500MB of data for as little as £5/month):

ASDA Mobile200Unlimited500MB£5.00
Tesco Mobile5005,0002GB£7.50
BT MobileUnlimitedUnlimited1GB£9.00
inc. £5 discount

The Great Value Starter Plan with 500MB of data is not available on BT’s Family SIM offer.

The Essential Plan

10 Pound Note

For customers wanting 3GB of data per month, BT Mobile offers The Essential Plan for £12/month (£17/month if you aren’t living in a BT Broadband household).

Once again, slightly cheaper deals can be found elsewhere. For instance, giffgaff offers 3GB of data with unlimited minutes and unlimited texts for £10/month on a 30-day rolling commitment (though without the offers and gift vouchers sometimes available on BT Mobile).

Tesco Mobile3,0005,0006GB£10.00
ASDA Mobile600Unlimited4GB£10.00
BT MobileUnlimitedUnlimited8GB£12.00
inc. £5 discount

With BT’s Family SIM offer, additional SIM cards with 3GB of data start from £8/month for the second SIM card, dropping to £5/month for the fifth SIM card.

The All-Rounder Plan

For £17/month (or £22/month if you’re not living in a BT Broadband household), BT offers The All-Rounder Plan with 6GB of data, unlimited minutes and unlimited texts.

Slightly cheaper deals from £15/month can occasionally be found on other networks like Tesco Mobile and giffgaff:

Tesco Mobile3,0005,0006GB£10.00
BT MobileUnlimitedUnlimited8GB£12.00
inc. £5 discount
ASDA Mobile1,000Unlimited8GB£15.00

With BT’s Family SIM offer, additional All-Rounder SIM cards with 6GB of data start from £12/month for the second SIM card, dropping down to just £7/month for the fifth SIM card.

The Ultimate Plan

20 Pound Note

For heavy data users, BT Mobile offers a £20/month Ultimate Plan (£25/month in non BT Broadband households) with 15GB of data, unlimited minutes and unlimited texts. You’ll also get Extra Speed 4G included.

In our opinion, this compares fairly favourably to other mobile networks. The following table shows a side-by-side comparison of BT Mobile and rival mobile networks:

BT MobileUnlimitedUnlimited20GB£15.00
inc. £5 discount
Tesco Mobile5,0005,00015GB£15.00
ASDA MobileUnlimitedUnlimited15GB£25.00

On BT’s Family SIM offer, additional SIM cards on The Premium Plan start from £15/month for the second SIM card, dropping down to £10/month for the fifth SIM card.

The Max Plan

For users wanting an even larger amount of data, BT Mobile offers the ‘Max Plan‘ with 25GB of data for £27/month (or £32/month if you’re not living in a BT Broadband household). The Ultimate Plan tariff also includes Extra Speed 4G.

This compares as follows to rival mobile networks:

Tesco Mobile5,0005,00030GB£20.00
BT MobileUnlimitedUnlimited25GB£20.00
inc. £5 discount

On Family SIM, you can get an additional SIM card on The Max Plan for £20/month. This drops down to £14/month for the fifth SIM card.

For a more in-depth comparison, please see our full listing of the UK’s best value SIM-only deals.

Network & Coverage

2G, 3G & 4G Coverage from EE

BT Mobile Coverage Map 2016
BT Mobile offers 99% population coverage using the EE network.

BT Mobile uses EE as its network coverage provider. Customers using BT Mobile will therefore receive the exact same coverage as customers on EE.

At the time of writing, BT Mobile has 99% population coverage on 2G, 3G and 4G. Extra Speed 4G coverage is available to about 80% of the population.

Before ordering your new phone or SIM card from BT Mobile, we strongly recommend checking the coverage in your area. You can do this by entering your postcode on the BT Mobile online coverage map:

Check BT Mobile Coverage ( →

Extra Speed 4G

By default, most customers joining BT Mobile will have access to EE’s standard-speed 4G network. This gives typical download speeds of 12-15Mbit/s and a maximum download speed of 30Mbit/s.

For customers living in an Extra Speed 4G coverage area, it’s possible to get download speeds of 24-30Mbit/s and a maximum download speed of 60Mbit/s. You’ll need to purchase the £4/month Extra Speed add-on (or this is included for free on the Ultimate Plan and Max Plan). The Extra Speed add-on comes on a 30-day rolling contract so you can add or remove it at any time.


Tethering or personal hotspot refers to the process of sharing your smartphone’s internet connection with other devices (e.g. with your laptop or tablet). It’s a convenient way of getting your devices online when you’re out-and-about.

From June 2016 onwards, tethering has been allowed on all BT Mobile plans. Prior to June 2016, tethering was prohibited by the old terms and conditions.

For more information about tethering on UK mobile networks, please see our guide to the UK’s best value tariffs for tethering.

Wi-Fi & 4G Calling

As of April 2018, BT Mobile is now offering Wi-Fi Calling and 4G Calling. This allows you to make phone calls over wi-fi and 4G, providing you have a compatible handset.

Wi-Fi Calling works on Apple handsets from the iPhone 5s onwards, and selected Android smartphones purchased directly from BT Mobile. You can use it to make phone calls where a mobile signal isn’t normally available (e.g. on the London Underground).

4G Calling works on Apple handsets from the iPhone 6 onwards, and selected Android smartphones purchased directly from BT Mobile. It gives better quality calling compared to 3G and allows you to benefit from faster download speeds whilst you’re on the call.

Keeping Your Phone Number

If you’re joining BT Mobile from another mobile network, it’s a straightforward process to keep your existing phone number.

BT Mobile Brand ImageTo do this, you should contact your old mobile network and ask them for a PAC Code. This is a nine-digit code that authorises the transfer of your phone number to BT Mobile. It’s a legal requirement for your old mobile network to provide you with a PAC Code – they must do this within two hours of your original request.

Once you’ve received the PAC Code from your old mobile network, you should order your new phone or SIM card on BT’s website. When your new phone or SIM card arrives, you can contact BT Customer Care on 150 to give them your PAC Code. Your phone number should then normally be transferred on the next working day.

For step-by-step instructions on moving your phone number to BT Mobile, please select your current mobile network from the drop-down menu below:

PAC Code Finder: Transfer Your Phone Number to BT Mobile

Select your current mobile network:

  More Options

Popularity & Number of Subscribers

  • BT Mobile
  • EE

In January 2016, EE became a part of the BT Group.

BT Mobile originally launched in March 2015. Just over a year after launch, in May 2016, BT Mobile was reported as having “a customer base of over 400,000” people. This makes it one of the fastest growing mobile networks in the UK.

In January 2016, BT completed a takeover of EE. Today, EE is a division within the BT Group. However, it is still being run as a separate business and as a separate brand from the BT Mobile service.

More Information

For more information, please see the BT Mobile website. You can also see the main BT website for information about their other offerings like broadband, TV and sport.

Your Comments 25 so far

We'd love to hear your thoughts and any questions you may have. So far, we've received 25 comments from readers. You can add your own comment here.

  • Was considering bt sim only based on reviews by a number of pro reviewers. Then checked the reviews by customers on trust pilot and others. Not a chance. Why no mention of the abysmal customer service reviews ? I mean they’re totally shocking for a supposed British institution.

  • Hi Ken

    I’m thinking of joining BT mobile as I’m BT broadband customer,if I was to go ahead with the mobile contract what would happen if I canceled the BT broadband contract which ends in a few months time? Many thanks Steve

    • Hi Steve,
      Thanks for your comment and a very good question! I’ve tried looking into this a bit further, but wasn’t able to get any conclusive answers from BT. All I was able to find was a mention in their terms & conditions that they reserve the right to remove the discount from you (whether they actually do this, I’m really not sure). Your best bet might be to contact BT to try and get a conclusive answer from them (do let me know if you find out anything on this!).

  • Ken,

    Yes great deals from BT mobile, you should also point out in your reviews that BT have a massive credit checking problem. I have recently started to transferred my family from Vodafone to Bt mobile given the great deals they are doing. BT broadband worked well and we had a Bt landline for 30 years. After signing up two of the kids for mobile phones , they blocked my order for my wife phone. So that they can protect the company. As an ex-employee I like to be faith to BT. So if your family wants more than two mobile contracts don’t go to BT mobile.

  • Earlier today, while my boyfriend and I were in school he received a message after turning his phone on during lunch for the first time in hours which read that he’d used 401MB out of his 500MB in the month, then exactly 1 minute later he received another message saying that he’d used up all of his allowance! We were both shocked at how this could’ve happened considering he’d only had the phone on for a minute and we were both pretty sure that data can’t be used while the phone is turned off? Anyway, he turned it back off and that was it until we got out of school about 3 hours later. As we were walking back to his house (which is only about a 7 minute walk) he had his phone on, and during those 7 minutes with no apps running apart from one he somehow used almost 300MB causing him to rack up a bill of £35 (his cap is £40) with no warning whatsoever? The app he was using hadn’t even used 1MB in total when we looked on the mobile data usage! We told his dad when we got home, and he checked on the BT Website and found that almost all of the 500MB had been used today, somehow?! It’s unbelievable – is it broken or a scam, we don’t know?

    • Hi Ellis,
      Thanks for your comment – this is a really strange situation. My *guess* is there might be a background application using up all of that data (e.g. do you have any photo auto-upload services, or were there any automatic updates running at that point?). It’s worth checking your mobile phone’s data usage monitor and then comparing this to BT’s figures to see if there any discrepancies. If your phone’s data usage monitor shows a very different number to that shown by BT, then I’d definitely get in touch with BT to discuss the situation.
      Hope this helps,

      • It said in the general mobile data usage bit that general applications had been using up the data, however it’s strange how 500MB was used up solely on that day and not on any other, even though all the phone settings had remained the same? BT was called and they insisted that it was his fault, that it must not have been turned off or something (even though it was) since they didn’t want to take any responsibility for it I’m guessing. We’ve turned off background app refresh now – maybe that was doing it, even if the phone was turned off? Oh well, hopefully it won’t happen again!

        • Hi Ellis,
          Yes, this is really strange 🙁 It might be some kind of automatic update (e.g. your apps or operating system updating themselves automatically) – ideally they should only really being doing this over wi-fi.

  • THINK TWICE BEFORE YOU GO BT MOBILE. Beware of BT mobile’s massive hidden data & call charges. You MUST READ THIS if you ever consider a BT mobile SIM card. I got charged additional £100 for my first bill which came as rude surprise. Since realised that countless unsuspecting victims have found themselves in similar situation which is not informed at any stage before you sign on with BT. BT later told me I should have seen a link at the end of the activation confirmation email which advises about avoiding a surprise. You will be lucky to ever read it amoungst the mill of information in the email but still does not mention this massive charge. What BT refers to does not give any indication of the charges except to check “my BT moblie” How BT can justify charging £100 for going over my data allowance by 1GB is beyond me. I have complained but told it is my responsibility to check the small prints. I am not going to give up but I believe I owe it to others mobile phone users to inform them and spare them this travesty. My previous service provider slowed down my browser when I once went over my data limit but never charged me extra above my contracted amount. With BT you will ALWAYS be charged heavily if you go above your limit. In my case I was charged my expected yearly payment in just the first month! BT have now confirmed that I cannot cap my monthly data so that I do not pay any extra above the original contracted monthly amount.

    • Hi Kunsky,
      Sorry to hear about the problems you’ve experienced on BT Mobile. Just wondering if you’ve tried their Spend Cap feature? In theory, this should prevent the problem you’re talking about (your out-of-allowance charges won’t be able to exceed a limit such as £5/month).

  • Wow Ken what a brilliant website. I have been looking for a PAYG deal for my father 91 years old, just about to get his first mobile. So helpful, I was beginning to despair trawling through all the companies on the web trying to answer all the very complicated questions that my father was asking, he was a Chartered Accountant, so very savvy with figures. Just so full of info, clearly set out and answering all my questions.. Thanks so much.

  • Hi all,
    Just a quick heads up that we’ve updated the article following BT’s recent price plan changes.
    – The 500MB plan is now £6/month (£11/month for non-BT Broadband customers)
    – The 2GB plan is now £11/month (£16/month for non-BT Broadband customers)
    – The 20GB plan is now £20/month (£25/month for non-BT Broadband customers)
    Previously, the tariffs respectively cost £5/month, £12/month and £20/month.
    Hope this helps,

  • Jason mccoll said:

    I’ve had a 20 pound sim package for my s5 was working fine then all of a sudden data stopped samsung checked phone all good my sim will work data in another phone and another sim will work in this phone checked all apn settings etc nothing any help please

    • Hi Jason,
      This is a really curious problem – afraid I don’t have any obvious solutions to the problem. Your best bet would probably be to ask BT Mobile Customer Services (call 150 on your BT handset or 0800 800 150 from any other phone).

  • Hi, I have bought BT broadband and now I use BT mobile for £5 a month with a discount. They say it’s a capped plan and if you use your 500mb, you cannot use anymore. But, on capped limit, it is £5 minimum and every month we get an extra £8-£10 bill because BT takes £1 for every extra MB. I have another contract with Tesco, with capped plan as well, and I never pay over my limit. Does that mean it is capped or BT is bad? I think maybe to cancel plan in the future? Thanks

    • Hi Stan,
      Thanks for your comment. I’ve taken a look at this a little bit further: it appears that BT has an option to add a “monthly spend cap” but there’s no way of actually setting this to zero. BT’s website says:
      “Limited to available caps. (Initial cap set between £5 and £100 depending on your credit status). Cap set at £100. Opt in to decrease to £5 or increase to a maximum of £200 (subject to credit status)”.
      It wasn’t totally clear to me whether this monthly spend cap includes your normal monthly charges. Have you asked BT what the cap on your account is currently set to? I’m curious whether you’re able to set your monthly cap to £5/month and whether this stops you from incurring any extra charges.
      With regards to out-of-allowance usage, BT does charge a rather hefty 10p/MB once you use up your allowance (this can very quickly add up to a fairly large bill). The best way to stop this from happening is to get it capped at BT (alternatively, your smartphone operating system might allow you to automatically stop the data connection once you reach a certain limit).

  • Hi,
    I was really interested in the “SIM only Plan” with the £5/month discount if you already have BT Broadband. Only problem is that I actually have BT Business Broadband (we run a riding school, not a pub etc) so the BT registratation failed with an error message (something like “unable to complete form”). I can only assume, like many of BTs BB vs Busines BB offers, is that this offer is only for BT BB and not for BT Business BB. Can you confirm this? Thanks

    • Hi Rob,
      Thanks for your comment. As you say, unfortunately, the BT Mobile tariffs are only available to people who have BT Consumer Broadband. There is a separate BT Business Mobile service but unfortunately the tariffs there are a little bit more expensive (e.g. £20/month for 2GB of internet compared to only £12/month on the consumer offering).

  • Hi Ken, you are totally brilliant. I’m so glad I found your website yesterday which answered all of my questions. I’ve been with Orange since Adam was a lad with no probs at all. Last Monday, having received a new SIM card from EE which after 22 hours in the phone still wasn’t working one of their guys made what he admitted was a very basic mistake and locked my Nokia C2 whilst migrating my number from card to card. This is after I’d spoken to four different EE staff to confirm the new SIM card would work, none of whom thought to ask for details of my handset. Now I’ve got to wait at least another seven working days for them to get me the unlocking code from Nokia. Grrr!

    In the meantime I’ve read lots of your info on how things work, e.g. I know all the contacts etc on my phone are still there without the SIM card in, I know I can use a 4g SIM card but it will run on 3G which my handset supports, what to do to change my network and keep my number and all about the BT mobile deals.

    Can’t thank you enough. Even ladies in their sixties like to learn! Thanks Ken.

  • One thing BT don’t tell you, and it took me a bit of pressing to find out, is that even though you have signed a 12-month contract, if you cancel or change your broadband provider in those 12 months, you immediately lose your mobile discount, i.e. your bill increases immediately by £5/month.

    Worth remembering.

  • Having to choose between combi SIM or nano is surprising. EE supply their subscribers with a universal card which fits all three sizes. Unless, of course, these are causing problems.

    • Hi Angus,
      Thanks for your comment. I’ve also received one of these trio-SIMs from Three: it worked OK when I used it as a Micro SIM. My only thoughts were that there’s a difference in thickness between the Nano SIM and other types of SIM card (it’s only a small difference at 0.09mm but nevertheless, it means having a regulation Nano SIM isn’t the same thing as popping out the centre part of a SIM card). Not sure if this ever causes problems – also, there’s people snapping the SIM card out of the wrong place and then damaging their phone by using an adapter (possible in certain handsets depending on how the SIM card slot is designed).

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