Need to remove all user data from device, restore to factory condition.
The SGH-T739 (Katalyst) handset features a WAP (Wireless Application Protocol) browser that allows you to access and navigate the wireless web using your phone.
To connect to the internet just press the right soft key for t-zones, while in standby mode. The t-zones browser will be launched and the T-Mobile Web page is displayed.
To disconnect from the internet simply press the red end call button .
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I did this step and my phone still says Wrong card.
resetting will not unlock the phone. Hereis hgow you unlock it
A. Insert a T-Mobile US SIM. Go to Settings > Security > Change Password. Set password to 00000000 (eight zeroes) if you have changed it from the default password. The reason for this is you are going to be accessing the service areas of the phone. Making adjustments in those areas requires a password as part of the code string you enter.
B. Turn on phone with full battery and non-T-Mobile SIM in place.
Allow phone to completely boot up to Wrong Card screen.
C. Enter from Wrong Card Screen
*#7465625# to confirm lock status by bringing up the Interrogate screen
D. Scroll through Interrogate Screen. The background will be different but it will look pretty much like the image below.
1. Network lock - Active (this is the one you'll be deactivating)
2. Subset lock - inactive
3. SP lock - inactive
4. CP lock - inactive
5. SIM Card lock - inactive
6. Activa lock - inactive
7. Auto network lock - inactive
8. Auto subset lock - inactive
9. Auto SP lock - inactive
10. Auto CP lock - inactive
11. Auto SIM Card lock - inactive
12. Phone lock - inactive
E. Push "C" button under navigation button to clear Interrogate screen back to Wrong Card screen or use the "Back" soft key. Either one will work.
F. From the Wrong Card screen enter the following:
*7465625*638*00000000*00000000# Those are two series of eight zeros. The phone will not show the zeros but will show dashes in their place.
Phone may make a small tone and at the bottom of the screen it will read "Network Personalized" or perhaps "Network Already Personalized". If you do this with no SIM in place you will receive the "No Lock Code In SIM" message. Phone will not unlock if no SIM is in place. I know, I tried it because I was asked about that. Now at this point your phone is temporarily able to use a "foreign" SIM. But if you were to remove the battery it would relock. To make it permanent continue to the following steps.
G. Now input the following from whatever screen shows up:
#7465625*638*00000000# (again this is a series of eight zeros)
Phone may make small tone and will read "Network Lock Deactivated"
H. Turn off phone and allow it to reboot.
J. Enter from Standby Screen
*#7465625# to confirm lock removal status
K. Scroll through Interrogate Screen
1. Network lock - inactive (note that this lock is now inactive)
2. Subset lock - inactive
3. SP lock - inactive
4. CP lock - inactive
5. SIM Card lock - inactive
6. Activa lock - inactive
7. Auto network lock - inactive
8. Auto subset lock - inactive
9. Auto SP lock - inactive
10. Auto CP lock - inactive
11. Auto SIM Card lock - inactive
12. Phone lock - inactive
That's it. Your Katalyst is ready to accept SIM cards from just about any GSM mobile telephone service provider in the world.
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