Inactive sim I have been given this mobile, it has been unlocked to accept any sim card but whatever sim card I put in it keeps showing inactive sim card on screen. I have tried inserting my original 02 sim card but it is also showing inactive sim. Please help. i bought this phone off a friend and opend it to all networks and now its keep saying inactive sim

ya sure you can unlock your samsung D600 mobile ,

Follow the instructions which is given below :

Warning: Do not enter any wrong unlock unlock codes on your Samsung D600 mobile phones. If you enter over a certain amount of wrong unlock codes on your mobile phone, your phone may get hard locked and sometimes become unusable.

1 - Switch ON your Samsung D600 with a NOT ACCEPTED SIM Card.
2 - Compose : #7465625*638*CODE# (or *#7465625*638*CODE#).

NOT ACCEPTED: We mean, to use a sim card from a network other than the network your Samsung D600 is locked to.
CODE: Its the unique Unlock Code for your Samsung D600.

If any doubt in this instructions visit this site Mobileunlockguide.com , after that get the unlock code here Classicunlocking.com , it gives you a good way to unlock samsung your mobile..........

hi restriction codes is nothing but your mobile is locked to particular network.due to this it accepts
only the particular Sim when ever other network Sim is inserted it shows Sim restricted .there are many ways
to solve this problem we can use software,cable ,codes etc....among them codes are the best .to get the codes
you can visit here mobileunlocksolutions
Here they ask the following details before rendering the unlock codes they are
1. Mobile model
2. Country from where you brought the mobile
3. Provider to which the mobile is locked
4. Imei number of the mobile
Finally they will send you the unlock codes .once you entered the code in your mobile as
for the instruction given by them .your mobile get unlocked and it accepts any network sim.

You can remove your network lock using the code. If you need an unlocking code, get it from your network provider or get it from http://www.superunlockcodes.com/samsung-sgh-a800/rs12wp9/ .This will help you to unlock your mobile easily.

try this, it should work for the samsung sgh-a137. First insert the T-Moble SIM in phone, at WRONG CARD screen ENTER on the keypad
*2767*3855# (wait 10-15 seconds) phone will reboot(restart)
When phone completes reboot ENTER
*7465625*638*00000000*00000000#
NEXT ENTER
#7465625*638*00000000#
AND THEN *#7465625# to check the locks....all locks are inactive...these are all the locks...
network lock - inactive
subset lock - inactive
sp lock - inactive
cp lock - inactive
sim lock - inactive
activa lock - inactive
phone lock - inactive
auto network - inactive
auto subset lock - inactive
auto sp lock - inactive
auto cp lock - inactive

There are pages of "unlock your phone" sites, but I recommend [email protected], I used them they are honest and charge £3.99 paypal or credit card, if they cannot unlock your mobile, they refund you and keep in touch with you via email. Good luck

Try a new sim card made for that network.

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" 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 phone 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.

the phone needs to be diagnosed so take the phone to a mobile service center and have them correct it.

These are different types of codes.
SIM pin code:
This is a pin code that locks the sim card until you enter the correct code. This protects your account, even
if your sim is put into another handset.
Phone Security Code:
This locks the handset, as opposed to the sim card. Some phones will accept incoming calls with this lock
enabled, but many require the code to be entered even to answer a call. You can also set some handsets to
only accept a "new" sim if the phone security code is entered.
Which is the one that you want?

u shuv it up ur ***!! thats wat i done it now works :D