Using a Micro SIM in an iPhone 3G

There are countless videos and blog posts telling you how you can take your full size SIM card and cut it down to fit in your iPad, but frankly, that’s idiotic. I mean really, who’s going to cut up the SIM card they’re using in their $85+ a month iPhone to put in their iPad when they could just pay $30 a month for unlimited date on the iPad. Yes, you might be cutting up a T-Mobile SIM, but let’s face it… Do you really want to be using EDGE on an iPad?

Anyhow, that’s not what this post is about. I’m going to show you how to do the exact opposite of that, how to take your Micro SIM and use it in your iPhone for cheap data only service. It’s easier than you might think.

Update: Some sites are incorrectly reporting that you need a jailbroken iPhone for this to work, you do not.

Update 2: You also watch this quick video walkthrough.

Step 1: Remove both your iPad’s Micro SIM card and your iPhone’s regular sized SIM card.
Step 1

Step 2: Find an expired debit card, gift card, or a calling card that you don’t need anymore and place your iPhone’s SIM card flush with the top edge and trace an outline of it. Or if you have a spare SIM card you can just skip to Step 4.
Step 2

Step 3: Take a pair of scissors and cut out your SIM template. It should look something like this when you’re done:
Step 3

Step 4: Place your Micro SIM card on top of your template and line up the contact points with your iPhone’s SIM. Then trace around it.
Step 4
Step 5:
Using an razor blade, cut out the middle of your template to make room for the Micro SIM.
Step 5

Step 6: Next place a small piece of scotch tape on the backside of the template to keep the Micro SIM from failing out.
Step 6

Step 7: Place the Micro SIM into your shiny new adapter and then place it into the iPhone’s SIM tray and insert it into the iPhone.

You might think this is where you get to enjoy your sweet 3G for $29.99 a month, but sadly there are a few extra steps needed on the software side of things. If you pull up Safari you’ll get the error message “Could not activate cellular data network”. But we can fix that!

Could not activate cellular date network

Step 8: Make sure your iPhone is connected to a WiFi network, then visit http://unlockit.co.nz and tap Continue.

Unlockit.co.nz

Step 9: Tap Custom APN, then enter Broadband in the APN field.

Tap Custom APN

Enter

Step 10: Leaving the remaining fields blank, tap Create Profile, then tap Install, followed by Install Now on the popup.

Tap Install
Tap Install Now

Step 11: Tap Done, disable your WiFi and bask in the glory of $30 a month unlimited 3G.

You're almost there! Tap done.

Step 12 (optional): Call up AT&T and cancel your iPhone plan!! I’m actually thinking about canceling my crappy AT&T service, since I use it mostly for data anyway and also have a Verizon phone I carry with me for making actual phone calls.

Note: If you decide to stick with your AT&T calling plan for your iPhone and were just trying this project because you’re a nerd, just remember that in order to go back to using your iPhone’s SIM you will need to go to Settings -> General, scroll down and tap Profile: APN Carrier Settings, then tap the red Remove button.

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Comments

94 responses to “Using a Micro SIM in an iPhone 3G”

  1. droptopv8 Avatar
    droptopv8

    has any one try ed this in canada with and success?

    I had a friend activate a rogers micro sim on his ipad,

    I put it in my rogers iphone 3g and changes the APN to broadband but it doesn’t work. so i am wondering if anyone had figured out how to do this on a rogers network. thanks for any info

    1. phardy Avatar
      phardy

      I had no success with Rogers… i bought a bell microsim card and activated it on my ipad, works great, can’t get it to work yet in the iphone… i get a Bell 3G network in the top corner but when i try to access data i get a “could not activate cellular data network” message :(((

      1. bloke1974 Avatar
        bloke1974

        SAME … ME TOO

        —> I THINK IPAD ACTIVATION IS REQUIRED…

        BTW: MAYBE COULD USE THE NEW IPAD FIRMWARE
        GOING AROUND IN J/B COMMUNITY,

        BE ADVISED
        *THERE ARE SIDE EFFECTS TO THAT CHOICE THOUGH TOO

    2. bloke1974 Avatar
      bloke1974

      ACTIVATION ON THE IPAD A REQUIRED STEP????

      COMMENT PLS

      1. Aaron Nelsen Avatar

        First, chill on the caps lock.

        Second, take a minute to search the site: http://hijinksinc.com/2010/07/08/activating-an-ipad-3g-micro-sim-without-an-ipad/

        No need for an iPad, activation URLs for Canada should be in the comments.

        1. dare Avatar
          dare

          i need help please
          my wi-fi dont work on the iphone can i activate the ipad sim into the iphone without wi-fi on the iphone

  2. mlouie Avatar
    mlouie

    I’m curious to know if there are any new developments regarding using the iPad sim in a 3g/3gs. I’ve been wondering if this still currently works (seeing that these first posts were from this summer). Would anyone like to share about how it is working for them these days? I would try it if I was sure at&t would not bother me about it (thanks in advance for any info shared).

  3. […] Originally Posted by Donny Bahama Holy crap! That is SO COOL! Can you please elaborate on how to "change the APN settings"? Also, do you have to OWN an iPad, or could you do this on a friend's iPad (even if he already has a data plan setup on it)? You don't need to own a iPad. I am just fortunate that my dad had one. You can use a friends iPad or got to a apple store or best buy to activate a micro sim. Then after activating a iPad data plan on the mirco sim just put it into your iphone 4 or 3gs with an adapter to hold the micro sim in place. Then go to Unlockit – APN Changer for your iPhone. Once there hit continue, then select Custom APN and finally fill in "Broadband" for the APN. Let the rest on the setting blank and select Create Profile. In the new Screen select to install and install now. After installation 3g and edge should work. You can manage your account via att.com/ipad and enjoy the $25/2GB a month plan. Facetime works too! I use voip to make calls when i don't want to use my verizon phone and use pandora without any issue. I also use Google voice for free text and to forward call to my Voip and Verizon phone. If this was helpful hit that thanks button and post about you experiences. $25 a month for as much Pandora, Email, Text, Voip call and 3g Facetime call I can fit in 2GB is just Awesome! Tip: Buy a cydia app called iControl to automatically shut off your Edge/3g when you are connected to Wifi. I helps save Data, Battery power and time. Its worth the $1-$3. References: Using a Micro SIM in an iPhone 3G | Hijinks Inc. […]

  4. jumpchao150 Avatar
    jumpchao150

    i did this and it worked fine until about a week from now the data wont load it has the data ip address but it just shows you the spinning wheel and wont load please help me

  5. bloke1974 Avatar
    bloke1974

    TRYING THIS IN CANADA

    NEEDS ACTIVATION WITH IPAD ??????

    I THINK THIS IS THE MISSING LINK????

  6. alexandresz Avatar
    alexandresz

    Last month ATT checked for the valids IMEI numbers, now not sure if they check the actual device, anyways I cannot login on the att website as before, they say: You cannot manage your non-iPad device at this site. I used a valid IMEI number. Anyone have success with the ipad simulator or anything to access the account?

  7. DoDoDo Avatar
    DoDoDo

    If you insert the SIM card into your phone, does the card’s phone number show up in the phone setting? Has anyone tried calling the number?

  8. dare Avatar
    dare

    I ment can i do this if no wi fi my card is activated by ipad,iphone is not jailbroken

  9. scottallison Avatar
    scottallison

    Once activated can the sim also be used in another non iOS device, e.g. Another smartphone or mifi device?

  10. Cyrus Avatar
    Cyrus

    Hi Aaron

    I have a locked Canadian Iphone to Fido. Im going to the states in march for about two weeks and want to know if i follow your insturctions, will it work for NON-US locked iphones?

    Would my canadian Iphone have to be unlocked for this to work on the ATT network using an Ipad data plan there?

    Thanks!

  11. chiaxa2911 Avatar
    chiaxa2911

    hi I am Jake, and I have a question. Can I buy an Ipad 3g and use the sim card in my iphone 4? then I will return the Ipad 3g and keep using the 3g data plan on my iphone?

  12. photobum Avatar
    photobum

    Anyone know if this still works? Also, if it does, what happens to the phone portion of the iPhone. Also, text messages? Does iOS 5’s iMessage thingy work?

    1. zuluflyer Avatar
      zuluflyer

      yep, it all works great, just can’t use siri to make calls on iPhone 4s

  13. zuluflyer Avatar
    zuluflyer

    Hi, I just got my new factory unlocked iPhone 4s and I’ve been waiting years to do this little unlock on it, and now I tried it and it didn’t work. Of course iPhone prompt pages have changed since you posted this unlock. Under custom APN, you have a dropdown list under Carrier, and I selected AT&T (Broadband). I have my iPad data micro sim in the iPhone. I get a message from AT&T that the call is not allowed when I try to make a non wi-fi call using Line2, which by the way works great on the iPad. Can you help? Thanks.

  14. zuluflyer Avatar
    zuluflyer

    just checked the notify box

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