New Network Settings Lock on Windows Mobile 6.1 Devices

Windows Mobile 6.1 adds a new level of locking to your device. Along side the standard Carrier lock, SIM lock, and Application lock, you will now find a lock for the carriers data network settings. This lock prevents you from modifying the carriers pre-loaded data settings. Why would anyone want to lock those settings? The answer is simple, to reduce the number of support calls from customers who have screwed them up. However, there are some people, like me, that need to modify those values. From what I’ve been able to gather on this, AT&T appears to be the only carrier that has actually turned this feature on. I’m sure this will change, but for now, it’s just AT&T.

But don’t worry, I’ve got the details on what you need to do to unlock this setting and let you change the values as needed. Before I get into the steps I need to give the standard disclaimer about modifying your device. I don’t know what effect this will have on your contract with AT&T – I imagine none, but who knows. Also, there is a chance that you can really mess up your device by changing the registry. If you’re not comfortable with making changes to the registry, I would recommend you don’t attempt these steps. So, with that out of the way, on with the details.

  1. Before we can make any changes, we need disable the application lock on the device. In this case, since it’s a BlackJack II device I recommend downloading the GPS Unlock tool from MoDaCo. This small CAB file will setup the built-in GPS to work on COM4 and also start the application unlock process. Once you’ve installed it on your device, download SDA_ApplicationUnlock and run it on your computer with your phone on ActiveSync (or WMDC). Congratulations, your BlackJack II is now application unlocked.
  2. If you don’t have a registry editor for your device, download one and install it. For editing the registry on the device, I recommend PHM. If you want to do it from your desktop, then try SOTI’s Pocket Controller Pro.
  3. Using the registry editor, browse to the following location: HKEY_LOCAL_MACHINE \ Comm \ ConnMgr \ Providers \ {7C4B7A38-5FF7-4bc1-80F6-5DA7870BB1AA} \ Connections \ AT&T IMS
  4. In this location you should find a key called ReadOnly with a value of 1. Change this to 0 (that’s a zero, not an O). You’ve now unlocked the first GPRS setting.
  5. Now, browse to the following location: HKEY_LOCAL_MACHINE \ Comm \ ConnMgr \ Providers \ {7C4B7A38-5FF7-4bc1-80F6-5DA7870BB1AA} \ Connections \ MEdia Net
  6. Once again, you will see a key by the name of ReadOnly with a value of 1. Change this to 0 (that’s a zero, not an O). You’ve now unlocked the second GPRS setting.
  7. Finally, browse to this location: HKEY_LOCAL_MACHINE \ Comm \ ConnMgr \ Providers \ {EF097F4C-DC4B-4c98-8FF6-AEF805DC0E8E} \ AT&T WAP
  8. And once again you will find a key by the name of ReadOnly. Change this to a 0 (that’s a zero, not an O). You’ve now unlocked the Proxy value.

That’s everything you need to do. Now you’re free to modify or disable the pre-configured settings to suit your needs. One thing to note: Each of the those registry locations had a long unique string after Providers. This will be the same for any Samsung BlackJack II device with Windows Mobile 6.1. However, I don’t expect that it would be the same for another device. So, if you’ve found your device has these locks and it’s not a BlackJack II, you will need to browse the entries under Providers to figure out which one is the right one. Please post the correct values along with your phone in the comments so that others can benefit from the knowledge.

About Mike Temporale

Mike Temporale has written 614 posts on Mobile Jaw..

Mike Temporale grew up fascinated by computers since an early age. His first hands on with a computer came when he was 7 years old and a travelling lab of Commodore PET computers made a stop at his school. Hooked on the new world these devices offered, he took any chance possible to get in front of a computer. When Compaq launched the iPaq 3600, he was hooked again. This time on a whole new world of mobile computing. Today, Mike spends his day helping clients deploy and manage their mobile device around the world. From installing custom software, to locking and securing data, and everything in between. He is also the Editor in Chief at Mobile Jaw - a site focused on today's mobile world.

  • Epixer

    I have a new Epix (Samsung i907 of AT&T). I got from AT&T the unlock code and unlocked it, I have unlocked the GPS, and I used your great assistance to unlock the GPRS.
    I have changed the SIM, configured a new WAP (internet) access, but :
    I cam download email through the GPRS and I have googlemaps work ok with the data connection.
    But, the browser refuses to connect!
    It did work with AT&T SIM and MEdia Net GPRS, but not with the new SIM and new GPRS address.
    any suggestion?

  • Mike Temporale

    @Epixer – the Epix is a very different device. It might look the same, but it has a touch screen and it running the Windows Mobile Professional instead of Windows Mobile Standard.

    It’s great to know that these hacks work on the WinMo Pro devices as well. I don’t have a Pro device handy at the moment, but my guess is that the browser isn’t configured correctly. In IE Mobile, hit the Menu and look for options / Connections. Check that it’s not set to use a proxy. I think there is something there about auto detecting network. Make sure it’s turned on.

    Let me know how that works out for you.

  • Epixer

    Thanks for your prompt reply and apology for my delayed one.
    I tried again my Epix: The internet explorer is locked so that it ignores existing WiFi connection, it only seeks celular data connection and if the SIM is not AT&T it does not connect.
    There is a proxy manager where it is fixed on saying “IE does not use proxy”.
    I searched the registry looking for entries re proxy, but found nothing.
    any suggestions?
    do you have a link to another WM browser? may be that will be the solution

  • Mike Temporale

    Now I’m the slow one to respond. 馃槈

    If you’re looking for another browser, I would try out Opera.

    In regards to the settings on IE Mobile, I’m not sure what’s going wrong if the Proxy is disabled for it. My only suggestion would be to turn the proxy on and then off. Maybe it’s confused and just needs to be reset. Sorry, I can’t be of more help. I wish I had that device in my hands to get a good look at what’s going on.

  • Epixer

    great minds think alike: I already installed Opera Mobile 9.5 beta and it works fine both on WiFi and GPRS.
    I’ll wait with the unlocking of IE Mobile browser. I wish one of those browsers will be as useful as the iPhone browser…
    thanks fon your assistance

  • Rick76

    For whatever reason, none of the above programs would install via Active Sync. When the “Programs to Install” box popped up, none of them were listed. So now I am in deep do do.

    I upgraded my AT&T Tilt to WM 6.1 and now I can’t get it working (it was working fine on Rogers before the ROM update). And, I just bought my wife an AT&T Blackjack II with WM 6.1, assuming “unlocked” meant fully unlocked, not just SIM unlocked.

    Mike, do you know anyone in the Toronto area that can get these working on Rogers for me. I’m not looking for a “freebie”, just someone reputable.

  • Mike Temporale

    @Rick76 – The above applications are for Smartphone (non-touch screen) devices and would not work on the Tilt. Pocket Controller excluded. It sounds like the ROM you have flashed to your device reactivated the SIM lock on your device. If you have the unlock code from before, you should be able to use it.

    As for the BlackJack II, the above steps will solve your problems for application lock. SIM is a different story.

  • Rick76

    Thanks for the reply Mike. I did not try these on the Tilt, just to mention I had a similar problem. The phone and email work on the Tilt, just no internet and I purchased it unlocked from a dealer in Montreal so I don’t have the unlock code.

    Regarding the Blackjack II, I found your updated post regarding changing the settings in the UAMgr file on the device itself, which seems to have worked to a point. By changing one setting, I can either access email or the internet but not both at the same time. I have outlined my current problem over on HoFo under the title BAAAD WM6.1 in the Windows Mobile Standard section (if you get a chance).

    I’m not sure if you recall but we met at a ONPPC meeting in Toronto about 3 years ago. Love your site. Keep up the good work.

  • Mike Temporale

    @Rick76 – if the phone and email are working fine on the tilt, then it seems like a bad proxy or network setting. Check the settings in IE Mobile and make sure it’s set to automatically detect network settings.

    On the BlackJack II, open IE Mobile and hit Menu / Tools / Options / Connections and be sure to click on the Automatically Detect Network Settings. And change the selected network from WAP to Internet. That should to the trick.

    I do recall the ONPPC events – Good Times! Thanks for the kind words on the site!

  • Rick76

    Thanks Mike, that worked like a charm on the Blackjack II. I never thought to look there! My wife will be happy (and that means I will be happy too!)

    I can’t seem to find the setting to “automatically detect network settings” on the Tilt though. It’s not in PIE or GPRS settings.

  • bill

    I have an AT&T Samsung Propel Pro i627. When I run the SDA Application unlock it tells me that the phone is not unlockable. When I try to change the registry settings, they don’t take, they just go back to the original values.

    Any ideas? What am I doing wrong?

  • Mike Temporale

    I have recently posted a new article about how to application unlock ANY Windows Mobile Standard device – including the Propel Pro. Use that process for application unlocking your device. Then you shouldn’t have any issues with editing the registry.

    Read more about removing the application lock here –

  • RB

    Great stuff…thanks for helping me out. It worked perfect.

  • Robeon Mew

    Every time i need to unlock a samsung BJ2, i always open this page. you have made things easy for me. All i need is internet access, and you gave it to me. thank you so much

  • ylaine

    im using i616 by fido. now, i’m here in the philippines and need to change the gprs settings to globe so i can connect to the internet. how can i do this? thanks!

  • Mike Temporale

    @ylaine – If the phone is from Fido, then you will need to carrier unlock your phone before you can insert and use the SIM card form another carrier. You can purchase the SIM unlock code from anyone of the numerous sites on the net, or you can call fido and ask them to do it.

  • ylaine

    thanks, dude!was able to use the sim from globe already. had called/texted using the new sim from globe. it’s just that the gprs settings of globe doesn’t work on the phone. do i still need to purchase the sim unlock code?

  • KI

    i dont have a usb cable for my sghi63 how do i install all these things?