This guide will show you how to prepare your Samsung SGH-T729 Blast to permanently accept non-T-Mobile SIM cards. Although the Blast is best used on T-Mobile because of the various features T-Mobile offers that are accessible only through use of a T-Mobile SIM on a phone with T-Mobile firmware sometimes using other carriers is unavoidable.

Is This Guide Helpful?

Think about that question as you read this guide. If you believe you would be able to make use of this information if you had a locked Blast in front of you as you read this consider giving this a guide a positive vote. If you unlock your Blast using this guide please give it a positive vote.

Used to be from time to time I would see an ad to the right of this guide asking up to $27.95 to accomplish what this guide allows you to do for free. Now the top dollar ad is $13.95.If it is unclearly written or just flat incorrect please contact me and let me know. I'm very good at taking informed criticism.

On To The Process!

A. Turn on phone with full battery and non-T-Mobile SIM in place.
     Allow phone to completely boot up to Wrong SIM screen.

B. Enter from Wrong SIM Screen

 *#7465625# to confirm lock status

C. Scroll through Interrogate Screen

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

D. Push "C" button under navigation button to clear Interrogate screen back to Wrong SIM
     screen

E. From the Wrong SIM 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". Or it may simply go back to the standby screen.  I've even turned the phone off and allowed it to reboot at this point.

F. 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"

G. Turn off phone
H. Re-start the handset 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 Blast is ready to accept SIM cards from just about any GSM mobile telephone service provider in the world.

• If you received a "wrong password" message you will need to insert a working SIM and reset the password to the default 8 zeroes "00000000". After that you may try this process again and it should work. 

• Please enter everything carefully. If it doesn't work the first time start over and be careful. There are many keystrokes to be made that are represented by dashes. It takes care to get them all correct.

I want to thank  eBay users, who will remain anonymous, for bringing these issues to my attention. As I stated above, I handle well positive criticism and now this guide is improved as a result!

© 2008 -2009 by Robert Chambers All Rights Reserved