Unlocked Phones: Check If Your Phone Is Locked, How To Unlock & Buy Unlocked

February 2nd, 2013

How to check whether your phone is locked, how to unlock it and where you can buy an unlocked phone.

LockedThere are many benefits of having an unlocked mobile phone. Unlocked smartphones can be used on the mobile network of your choice. This means greater flexibility to switch to cheaper deals, the ability to use your smartphone abroad for less and the ability to sell your handset for more once you’ve finished using it.

In this article, we take a look at mobile phone unlocking. We’ll look at the benefits of unlocking, how to tell if your phone is locked and how you can unlock your phone. We’ll also look at various other elements of unlocking such as legality, the reasons that phones are sold locked and where you can buy unlocked phones.

What are the benefits of having an unlocked mobile phone?

Unlocked mobile phones can work on any compatible mobile network. This is in contrast to locked mobile phones which will only work on one network. The benefits of having an unlocked phone include:

Flexibility to change mobile network.

With a handset that is locked to a single network, you’re restricted to buying airtime from a single company. In contrast, an unlocked handset will work on any mobile network. This gives you the flexibility to compare offerings from different companies and to switch to the tariff that offers the best deal for you.

As an example of the savings possible, check out our guide to the best value SIM Only deals. Three’s £9.90/month SIM card gives you 600 minutes, 5000 texts and 1GB internet. On many other contracts, you could be paying close to £35/month for the same amount of airtime. Having the flexibility to switch to SIM Only tariffs from other networks can save you in the region of £20/month (or £240 per year).

Unlocked handsets can be used abroad for less.

Cheaper calls, texts & internet when you’re abroad.

If you’re going abroad and plan to roam on a UK SIM card, you could be paying significantly more than you’re used to when using your mobile phone. If you’re travelling outside the EU, expect to pay to £1.50/minute for phone calls, 50p per text message and £6/MB for data. With the typical smartphone user consuming around 10MB of data each day, this adds up to a mammoth £60 per day. Within Europe, costs are much lower and start from £2/day to use your smartphone abroad.

Aside from turning your phone off, the best way of cutting your phone bill whilst travelling is to buy a SIM card locally in the country of travel. This allows you to use the full feature set of your smartphone (including internet, e-mail, instant messaging and maps) whilst paying the same as local residents. To use a local SIM card when abroad, you’ll need to unlock your smartphone.

You can pass your old handset to family, friends or colleagues.

When we upgrade our devices, many of us pass our old devices to friends or family. This means two people can benefit from a handset upgrade, rather than just one person. As your friends and family may be on a different mobile network to you, the handset may need to be unlocked before they can use it.

Your handset retains value better.

If you plan to sell your phone in the future (for example through eBay, Gumtree or CeX), the value of your phone will be much greater if it’s unlocked. This is because your phone can be sold to customers of any mobile network, rather than just one. Our analysis shows that unlocked devices are worth approximately £20 more than locked devices. They may also sell more quickly and attract a greater number of bids.

How do I tell whether my phone is locked?

Network Logos

Look out for your mobile operator’s logo on the box, handset or start-up screen.

If you purchased your handset directly from your mobile network, either on Pay As You Go or Pay Monthly, there is a reasonably good chance that it’s locked. Some tell-tale signs of a locked phone include:

  • The phone box/packaging has the logo of your mobile network on it.
  • The phone itself is branded with the logo of your mobile operator.
  • You see the logo of your mobile operator every time that you turn on the phone.
  • Within the phone, there are numerous menu items relating to your mobile operator (for example Vodafone 360 or Orange World). Note, however, that this isn’t a very reliable indicator so you should always double-check.

The best way to test if your phone is locked is to grab yourself a free Pay As You Go SIM card. The SIM card should be from a network other than your own. Place this SIM card inside your phone. If your phone is unlocked, it’ll start up as normal and load up fully. It will display the name of the network on the screen and allow you to make calls and send texts. If your phone is locked, it’ll display an error message or ask you for a “subsidy PIN”.

If your phone was described as “SIM-free” or “unlocked” when you bought it, you should find that it passes this test as unlocked. If this is not the case, there may be recourse to return your phone under the product description being incorrect.

How can I unlock my mobile phone?

Smartphones StackedThe best way to unlock your phone is to contact your mobile network. This should be done by the original owner of the phone. All of the UK’s mobile operators will unlock their devices and the charge for doing so is no more than £20. On some networks, unlocking may be free for Pay Monthly customers.

We’ve got in-depth guides to:

For all other devices, the general method of unlocking is to contact your mobile operator and to provide them with your IMEI number. You can find this number by opening the dialler (just as if you were to make a phone call) and dialling *#06# (star hash zero six hash).

For some devices, there are unofficial methods of unlocking. This may involve “jailbreaking” or “rooting” your phone. This is normally recommended only for advanced users and unlocking your phone in this way will invalidate your warranty. Furthermore, when unlocking is carried out in this way, there is the possibility of permanently damaging your phone. The unlock may not be permanent and you may need to unlock your phone again after each software update.

Please be aware that there are a large number of scam unlocking services on the internet. Some of these services simply charge you for something that can be downloaded free (e.g. jailbreaking software). Other services simply don’t work and you will be refused customer support and a refund. Please triple-check all third-party unlocking services before using them.

The only official way to unlock your phone is through your mobile operator. This is because your mobile operator paid to subsidise the phone. It is not possible for any other company to offer an official unlock.

Isn’t it illegal to unlock my phone?

Unlocking is 100% legal and is a service provided by your mobile operator.

Unlocking is 100% legal and is a service provided by your mobile operator.

No, it isn’t illegal to unlock your phone in the UK. Unlocking is a service that is provided by all of the major mobile operators.

Note that unlocking is very different from unblocking. Unblocking refers to the technique of modifying a phone so that it continue to work after the mobile networks have blocked it. This technique is sometimes performed on devices that have been stolen. Unblocking is illegal but unlocking is 100% legal in the UK.

Where can I get an unlocked phone?

If you buy a phone that is unlocked to start off with, you can save the hassle of having to unlock it at a later date.

Usually when you buy a phone directly from a network, it’ll be locked. This applies to all Pay As You Go phones and most Pay Monthly phones. As an alternative to buying directly from the network, many people have reported receiving unlocked phones when they buy through the Carphone Warehouse. As the Carphone Warehouse sells phones on behalf of multiple networks, it would be a logistical nightmare for them to hold separate stock for each phone locked on different networks. They get around this problem by holding a single stock of unlocked devices. As these devices are unlocked, they can sell airtime from any mobile network with the device. They never advertise their smartphones as unlocked so there’s a degree of risk in this so be prepared to pay to unlock it if necessary.

Mobiles.co.uk, a branch of the Carphone Warehouse, also sell all of their handsets unlocked.

If you’re happy to pay more upfront and to do away with a contract, look out for “SIM-free” phones. These phones are sold without airtime and can be used on the network of your choice. You’ll be able to buy them from retailers such as Amazon.co.uk.

Why are phones locked?

In the UK, the network operators often subsidise their phones. They do this in an attempt to attract customers to their network.

Consumers (particularly on Pay As You Go) tend to be fairly network agnostic. They usually choose the phone that they want first and will then compare networks to find the one that offers the cheapest device. In order to lower the cost of the handset, networks subsidise the phones and sell them as a “loss leader” hoping to make that money back through selling airtime.

To stop you from buying a subsidised phone from Network A (which loses money on the phone) and immediately using it on Network B (which makes the profit from the airtime), the phone is sold “locked” to Network A. This protects the subsidy that they have invested in the device.

By paying this subsidy back to the network, you can unlock your phone for use on other networks.

I’ve got a phone locked to a foreign network. Will it work on a UK network?

No. For the purposes of phone locking, foreign networks are treated as totally separate networks to UK ones. This is true even when the foreign network shares its name with a UK counterpart.

For example, if you have a phone locked to 3 Hong Kong, it won’t work on 3 UK. If you have a phone locked to Orange France, it won’t work on Orange UK. And so on for O2 Ireland, T-Mobile Germany, Vodafone Australia. Phone that are locked to foreign networks will not work on their British counterpart network and will need to be unlocked first.

Is my network legally obliged to unlock my phone for me?

No. There is no legal obligation for the network to unlock your phone. They can refuse this request for any reason. However, all UK networks will happily unlock your phone providing you pay a small amount (no more than £15-£20).

I’m planning to unlock my phone and switch network. What else should I know?

SIM cardIf you’ve got an unlocked phone, you’ll have access to great value SIM-only tariffs. These start at just £6.90/month with minutes, texts and internet included. Typically you’ll save around £240/year with a SIM only deal. Alternatively, pick up a free Pay As You Go SIM card – many of them can offer great deals too.

If you’re switching network and wish to keep your current phone number, you’ll need a PAC Code. We’ve got a detailed guide on obtaining and using a PAC code.

Finally, don’t forget it might be worth checking Carphone Warehouse and Mobiles.co.uk before buying your smartphone. Whilst Carphone Warehouse doesn’t promise that their devices are unlocked, there’s a reasonable chance that it is. They often charge the same as going directly to the network (or less) so there’s little to lose.

    

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About Ken

Ken Lo

I'm a freelance writer specialising in mobile technology. I've been blogging at Ken's Tech Tips since 2005 with the aim of demystifying mobile technology for the rest of us.

Before writing about mobile technology, my background was in space & atmospheric physics. I have also worked in software development. Nowadays, I help companies to explain mobile technology to their customers. Please check out my portfolio or get in touch for more information. I'm also on Google+.

Your Comments

We'd love to hear your thoughts and any questions you may have. So far, we've received 37 comments from readers. You can add your own comment here.

  1. DEB said:

    Hi Ken – many thanks for your thread regarding unlocking a second hand iPhone 4s locked to Orange which I had bought. Getting myself set up with an EE PAYG account worked perfectly!!

  2. Bartek said:

    Hello, I’m planning to buy a sim free Samsung S5 in Germany, can I use it in UK without any problems?
    Thank you for your help

    1. Ken Lo
      Ken replied:

      Hi Bartek,
      Thanks for your comment. It shouldn’t be a problem using an unlocked German Galaxy S5 on a UK mobile network. It’s worth being aware of Samsung’s region-lock but the good news is it allows you to immediately use your phone in any EU country (both the UK and Germany included).
      Hope this helps,
      Ken

  3. Debra Windle said:

    I have bought a galaxy s from a friend. It was originally on virgin but they had it unlocked and they used it on 3. I put in an o2 sim and it looks like there’s signal but not registering on network. Have tried a Vodafone sim too and same thing happens.

    1. Ken Lo
      Ken replied:

      Hi Debra,
      Thanks for your comment. I assume you aren’t seeing a message like “Invalid SIM”? If so, the SIM card has been accepted by the phone (it’s not a problem due to the handset being locked). It’s worth trying this to see whether it solves the problem: Application > Settings > Wireless and network > Mobile network > Network operators > Select network automatically. Sometimes you won’t be able to find the network if it’s specifically set to only look for one network.
      Ken

  4. Noor said:

    Hello! I have a bit of an unusual question as well..

    I have recently been given a phone (LG G3) to me by an English friend, so it’s an English phone. He works for a large phone company in England, so I don’t think he paid for it. The phone has been used in the UK for a short time.

    However, I live in The Netherlands and I want to use the phone here but my Dutch simcard won’t activate in the phone. The phone asks for my personal simcard pin (no other code..) so the phone recognises my simcard but then I have no network or internet. I can’t select any networks either.

    As the phone doesnt ask for another pincode but the personal simcard pincode I am unsure whether or not it’s a UK lock. Do you have any idea of what else it could be? Should I call the English phone company? I’m kind of afraid they won’t help me because i’m abroad. Is there another way?

    I hope you can help me! I have tried so many things and starting to get a bit desperate as my old phone is dead…

    Thank you!
    Noor.

    1. Ken Lo
      Ken replied:

      Hi Noor,
      Thanks for your comment. Have you tried using the LG G3 without a SIM card inside? If so, did it still ask you for a PIN unlock code? If the message shows only when a SIM card is inside your handset, it’ll be a PIN unlock code attached to the SIM card. If the message still shows without a SIM card inside the handset, it’s probably a PIN lock on the phone which you’ll need to contact the previous owner about.
      Ken

  5. Ian Besch said:

    Hi Ken,

    Here’s an unusual question from Canada. A friend has given me an Orange SIM card that was in a secondhand iPhone she had purchased (here in Canada). I am heading to Scotland in September with my unlocked Moto G and hoped the card might work for me when I arrive (having intended to purchase a U.K. PAYG card when I get there regardless). Any idea how I can find out which plan this card is on? The only info my phone tells me is its phone number and, of course, that the service is out of range. I can’t seem to dig through to the answer on the Orange/EE website.

    Cheers.

    1. Ken Lo
      Ken replied:

      Hi Ian,
      Thanks for your comment: I really love unusual questions! 😉 The first thing to note is that Orange Pay As You Go SIM cards expire automatically after 6 months of inactivity. For this reason, it’s possible the SIM card will no longer function when you arrive in the UK. It is still worth trying however: my guide to Orange Pay As You Go might be helpful for learning about their tariffs. TL;DR: text PLAN to 450 if you’d like to find out which tariff you’re on.
      Hope this helps!
      Ken

  6. Tim B said:

    Argos also sell sim free phones, which will take different sim cards. But they do describe them as ‘sim free’, not unlocked, which presumably means they were not locked in the first place. This isn’t with all the phones they sell though, only some.

    1. Ken Lo
      Ken replied:

      Hi Tim,
      Thanks for your comment. I believe the SIM-free smartphones sold at Argos should also be unlocked for use on any network.
      In general, it should be fairly safe to assume SIM-free smartphones are also unlocked. The key exception is for SIM-free iPhones when they’re purchased from a third-party retailer such as the Carphone Warehouse (see the article here for more information).
      Ken

  7. Shah said:

    Hi I have bought an iPhone 6 but I don’t know what network its on can you help

    1. Ken Lo
      Ken replied:

      Hi Shah,
      I believe you can bring the iPhone to your local Apple Store and they can check the status on their system (i.e. whether the iPhone is locked and if so, which network it’s currently locked to).
      Hope this helps,
      Ken

  8. Mark said:

    I purchased a Galaxy S5 on eBay! And it has Samsung lock asking for original email n password setup ! Seller believes he done factory reset but still I get to Samsung account and no further. How do I get the Samsung account and password to unlock the phone, I’m stressing I might have been scammed. Please help

    1. Ken Lo
      Ken replied:

      Hi Mark,
      Thanks for your comment. It sounds like your phone may have been locked remotely by the original owner of the handset. Can you clarify on the exact message shown on the phone? It’s possible the handset could either be stolen or it may have been incorrectly locked by the previous owner of the handset.
      Ken

  9. Alex said:

    Hi Ken.I leave in Cyprus and I bought an iPhone 6 from Carephone warehouse. The phone seems to be sim free and only works with Uk networks. Since I came back to Cyprus the phone hasn’t been activate it yet because it doesn’t support any local career.How can I unlock it? If I’ll send it back to them through a friend they will be able to unlocke it for me?

    1. Ken Lo
      Ken replied:

      Hi Alex,
      Thanks for your comment. A SIM-free iPhone from the Carphone Warehouse will indeed need to be activated on a UK mobile network. If you ask a friend to activate the iPhone for you, I recommend asking them to use a SIM card from Three. The CPW iPhone will automatically lock itself to the first network you use (choose Three as they’ll unlock all of their handsets totally free of charge with no questions asked). See this article and the comments within it for more information.
      Hope this helps,
      Ken

  10. BillW said:

    Hi Ken, I have a Samsung Galaxy Ace 2, on O2 PAYG. As I’m considering rooting the phone, I followed your good advice on checking whether it’s locked by trying an EE PAYG SIM in it. It works – sort of. It starts up OK, and shows EE as the phone network. I can make calls and send texts, but for some reason it won’t receive calls or texts. Obviously this wouldn’t be much use if I was actually intending to use it on EE, but I’m wondering if I’ve done enough to prove that the phone is not locked to O2. My real intention is just to ensure there are no obvious pitfalls before rooting the phone. What do you think?

    1. Ken Lo
      Ken replied:

      Hi Bill,
      Thanks for your comment. If the EE SIM card is working in your Galaxy Ace 2, this means your handset is already unlocked. It’s rather strange that your Galaxy Ace 2 isn’t receiving incoming calls and text messages (have you been calling the new number assigned to the EE SIM card?). Nevertheless, if the problem persists, you should probably contact EE Customer Services or your local EE store to get the problem resolved (they’ll check the SIM card as well as the phone). With regards to rooting your phone, please be aware that this will only remove certain security limitations placed on the device (think of ‘rooting’ as the same thing as accessing the Administrator account on your PC). It won’t affect the lock status of your phone though do be aware of all the security considerations before you root the handset.
      Ken

      1. BillW replied:

        Hi Ken, thanks for your advice. I hadn’t thought of going to an EE shop, so I might do that; I certainly didn’t want to spend lots of time on an EE helpline! Yes, I have been using the phone number printed on the EE pack: that’s the number that shows up on caller id on a target phone when I call out, but no joy when trying to call in. I’ve also ordered a Vodafone free SIM to see if that works better than the EE one. Thanks also for the rooting link, which seems a lot better written than some of the stuff I’ve found. Plenty for me to think about! Bill.

  11. Eriss said:

    Hello, i bought a second hand iphone 5c but it was locked
    And after checking it said
    The carrier was Carphone warehouse
    I read that these iphones lock to the first uk sim used to activate,
    Can anyone help me find the network that was used on this iphone please?
    The carrier how can i find?

    1. Ken Lo
      Ken replied:

      Hi Eriss,
      The best thing to do is to ask the person you bought the iPhone from – if not then I’d probably recommend going to an Apple store and asking the guys there.
      Ken

  12. Jenson said:

    I have an unlocked Orange Motorola Razr i. Is there a chance the phone gets again locked if i upgrade the software or flash using custom firmware(unlocked)? I don’t know whether my phone is factory unlocked or software unlocked.
    Thank you.

  13. steven said:

    i bought phone and it was on contract and now cut off

  14. Kate said:

    I bought a ‘SIM free’ phone last November but hadn’t decided on which network to use. The phone is a Nokia Asha 300. I have recently found that the o2 pay as you go that I did choose isn’t right for my use now so I changed to a Vodafone monthly SIM only deal and received the PUK code and had my number moved.

    Thing is I’ve tried to put my new SIM in and although the number is now with Vodafone the SIM won’t work in the phone. Vodafone say it’s locked to O2. How can this be if it was bought independently brand new and sealed from a non network retailer?

    I’ve read about this happening on iPhones with the phone locking to the first SIM but this is a Nokia Asha 300.

    1. Ken Lo
      Ken replied:

      Hi Kate,

      Sorry to hear about the problems you’ve been having on your Asha 300. As far as I’m aware, only the iPhone will lock itself to the first network you use. I’ve not heard of this behaviour on Nokia phones – are you sure the device was SIM free & unlocked to start with? I wonder if the phone you were provided with was originally locked to O2.

      The good news is that you can unlock your phone from O2 for £15 (taken from your PAYG credit). To do so, grab a SIM card from O2 and then top it up by £15. You can then fill in this form on their website to request an unlock.

      Hope this helps,

      Ken

      1. ayesha replied:

        hi
        basically I have topped up £15 on O2 and then they say that I need to top up another £20 so that they can activate the sim and make a chargeable call to activate it. I have only used the sim to receive calls.

  15. CPT said:

    Fully agree with Cristyn Lieo! Best way to save your money is buying a SIM free phone. You won’t be troubling with how to avoid this locking and unlocking phones.

  16. anne said:

    Great help! I was given a mobile on the 3 network, put my orange sim and everything works except the internet – am guessing now it isn't locked but something else entirely!

    1. Ken Lo
      Ken replied:

      Hi Anne,

      Great work! The problem is now probably to do with your APN (Access Point Name) settings. For more information see this article on APN settings.

      Ken

  17. Cristyn Lieo said:

    To avoid this locking and unlocking phones, buy a SIM free phone. I am using Sim free phone from 6 months and getting so many benefits regarding schemes and saving money. :)

  18. R Carthy said:

    If you have a 2 year old purchased when new as a SIm free phone which you take to a network provider to repair, tell them it is SIM free and why and then when you get it back find they have locked it to their network, is this breaking the law?, since they have done something you have not asked for and now are making your life complicated?

  19. Chip said:

    Hi Ken

    Great article! I live in Zambia and am looking to buy the Nokia Lumia 710 from Carphone Warehouse through a friend of mine who'll be travelling to the UK soon. Would you know if it is unlocked by default (even though it's being offered by specific network operators there)? I've seen the SIM-free deal, but am hoping to score the PAYG one 'cause its far cheaper!

    1. Ken Lo
      Ken replied:

      Hi Chip,

      Sometimes Carphone Warehouse provide their phones unlocked, but not always – it isn't guaranteed. Mobiles.co.uk too. If you order online, I guess you can technically return the phone within 7 days on Distance Selling Regulations, or any way you order you can pay the fee to unlock the phone in the event it doesn't come unlocked.

      Hope this helps,

      Ken

  20. wsm2 said:

    Hi
    I have an Orange France Samsung E1150. I bought it as a prepaid 9 months ago and it is not on contract. I am returning to Australia soon and have tried to get it unlocked through the Orange website but it is all in French and too complicatedf to use. Is there an easy way to get it unlocked without having to deal with Orange in French. They have an English line but not for mobiles. Why not ????????????

  21. kim said:

    Hi Ken. Have you seen giffgaff’s new unlockapedia? giffgaff.com/unlock
    Have a look and let me know what you think.

    Ta,
    Kim @ giffgaff

    1. Ken Lo
      Ken replied:

      Hey Kim,

      Cheers for your comment – in fact I had tweeted you guys the other day trying to find a link! Though I suspect it hadn't be launched then. Unlockapedia is looking good! Great idea to provide a resource on how to unlock phones & allowing people to submit comments/thoughts on each service. Wiki-like features could be an interesting addition to the "unlockapedia" – perhaps a way for people to contribute their own guides/experiences on unlocking :)

      Ken

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