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HTC Source | September 19, 2014

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How to SIM unlock the HTC One (M8) for free

How to SIM unlock the HTC One (M8) for free

So, you picked up the all new HTC One (M8), but now you’re wondering what you need to do to unlock the phone’s SIM slot. . If you purchased an unlocked international phone, you can pop in any SIM card you want and go about your business. But that option is typically not available if you purchased a subsidized HTC One (M8) through a service provider.

Luckily, there there are a few options which will all you to get your hands on a SIM unlock code for the HTC One (M8). If you want the quickest option and are willing to pay, you can get a SIM unlock code for the HTC One (M8) for only $12.95. But we have a better solution if you don’t mind waiting a few days. If you want to unlock your carrier-branded HTC One (M8) without opening your wallet, call your service provider and simply ask them for the SIM unlock code to your HTC One (M8).  The only catch is that each service provider has a few criteria which must be met before they give up the unlock code for the device.

US service provider US unlock policies

AT&T: account has been active and is in good standing for at least sixty days; phone is paid off or service commitment has been fulfilled.
T-Mobile: phone has been paid off.
Sprint: account has been active and is in good standing for at least 90 days.
Verizon: the HTC One (M8) from Verizon is SIM unlocked right out of the box.

While we only list the SIM unlock policies for the US, service providers in Europe and Asia typically abide by the same rules. If you do not meet the criteria required by your service provider, a third-party SIM unlock service for your HTC One (M8) is your only other option.

Obtain your HTC One (M8) SIM unlock code from your service provider

In order to SIM unlock your HTC One (M8), you must have your IMEI number and a nanoSIM card from another service provider.

  1. Locate your handset IMEI number within Settings > About Phone > Phone Identity > IMEI
  2. Write down your IMEI number
  3. Call your service provider: (AT&T: 1-800-331-0500; T-Mobile: 1-800-866-2453; Sprint: 1-888-211-4727)
  4. Ask customer service for the SIM unlock code for your HTC One (M8)
  5. Customer service will ask for your IMEI number and will fill out a request form. Once the SIM unlock code request form for your HTC One (M8) is processed, the code will be emailed to you (typically 1-3 days later)

SIM unlock the HTC One (M8)

  1. Once you receive your SIM unlock code, turn off your HTC One (M8)
  2. Remove the nanoSIM card from the phone
  3. Insert a nanoSIM card from another service provider and turn the HTC One (M8) back on
  4. When prompted, enter SIM unlock code provided by your service provider
  5. Enjoy your HTC One (M8) on any GSM carrier of your choice.

About Nick Gray

Tech enthusiast, Android user and founder of the first HTC blog – Nick Gray has been blogging about HTC phones before most people knew what a smartphone even was. Over the years Nick has owned and tested dozens HTC devices and is constantly flashing new ROMs to his Android phones.

  • Tarcísio Medeiros

    So bad!
    Thankfully in Brazil is prohibited to sell locked cellphones. As you have to pay the cell phone full price only if you cancel your account.

  • Mike Johnson

    I went to CPR cell phone repair..and was told unloking phone was not possible because Sprint was owed payment…is this true

  • laloofr

    Hello,
    I have a unlock code that I paid for but when I turn on my htc M8 with the new sim card in it, it says “invalid sim card” and doesn’t ask me for a unlock code :(
    How can I enter the unlock code anyway??
    Thanks for your help
    laloofr
    (HTC One M8 locked Sprint USA)

    • nickmgray

      Here’s a few tips which might help.

      1. Switch off your HTC One M8 phone and find the SIM card tray. Using a paper clip or pin take out the SIM card from the tray. Then re-adjust the card and again insert it in the tray. Then see if the“no SIM card” error on HTC One M8 is solved or not.

      2. If you see that the problem still exits, then again take out the SIM card from the phone. Then clean it and the gold contacts on it using some alcohol. But be careful that the SIM card does not get damaged. Dry the card for sometimes and again re-insert it.

      3. Sometimes “no SIM card” error on HTC One M8 occurs if the card is loose in the tray. So to prevent it from shaking in the tray, thicken the SIM card by adding a thin layer of tape. Ensure that you are not covering the golden plates on the SIM card.

      4.By toggling the Air plane mode on and off can solve the No Sim car installed error on the htc one m8..Hold the Power button then switch on Airplane mode, Then hold the power button again and turn it off.You can go to network settings and manually turn it off and on again

      • laloofr

        Thank you nick, but I don’t have a “no sim card” problem.
        The HTC shows a ” invalid card” message, but doesn’t ask for the unlock code.

        • jose fernandez

          Hi Nick, Is there a suggested next step to laloofr’s question? I have the same situation. Thanks, Jose

          • nickmgray

            Hmmm… looks like Sprint allows SIM unlocking, but only when using a SIM card from a non-US service provider.

            http://www.greenbot.com/article/2146760/sprint-gets-generous-and-promises-to-unlock-all-android-sims-by-february-2015.html

            Try using a SIM from Europe to unlock the Sprint HTC One (M8).

          • jose fernandez

            Thanks Nick, I will be traveling next month and can try that. In the interim….I called Sprint International and they gave me a PUK Unlock No.
            Will that help me at all solve my issue of unlocking my phone so I can use it with the Tmobile all US and Int’t plan?
            Or is the PUK unlock a different unlock key that still won’t solve my real need to get the tmobile plan that I can text, talk and data in 122 countries?
            We all appreciate your great help.

  • Jones

    Do you want unlock your HTC One ? I recommend you https://www.officialhtcunlock.com/ they will send your unlock code in less than 5 mins!

    • Jack

      Thanks, i got my unlock code fastly!

  • Vlad

    Had to use an unlocking website ( http://unlockphonenetwork.com/ )
    Service Provider wasnt able to get me the code, the unlocking website did the job ;)