Samsung

If you received two unlock codes the first one is Unfreeze code. The second code is Network Unlock Code (NCK). If you received only one code from us it's a Network Unlock Code (NCK).

How to remove Phone freeze 

A frequent reason for Freeze Code to be enabled is when user enters several erroneous NCK codes.

If your cell phone shows a "Phone Freeze" message use the first code to unfreeze it. Enter the 8-digit code with SIM card in the phone when the "Phone Freeze" message is displayed, then press OK button (middle buttom, depending on phone branding can be called differently). 
You will not see text appear on screen while typing. 

You can now proceede to entering Network Unlock Code. 

How To Fix Samsung A737 Phone Freeze:* 91906175 + OK. Enter the code WITH simcard inside the phone when "Phone Freeze" warning is displayed (no entered digits will be displayed).


How to enter Network Unlock Code 

Samsung Z510, Z650, Z320i

1. Power on without SIM card
2. Type in **CODE# where CODE is the unlock code you received from us.

Samsung Z105 and Z107

1. Power on with a non accepted SIM card
2. Type in #7465625*638*CODE# (or *#7465625*638*CODE#) where CODE is the unlock code you received from us.
3. Press the SEND key, display should read, "Personalization Cancelled"

Samsung 3G series, D, Z-series, some A-, C-, E-, T-, X-series, other models

1. Power on without SIM card
2. Type in #7465625*638*CODE# (or *#7465625*638*CODE#) where CODE is the unlock code you received from us.
3. Press the SEND key, display should read, "Personalization Cancelled"

Other Samsung models

1. Power on without SIM card
2. Phone will ask for "Password"
3. Enter the unlock code you received from us.

Note: In some instances the phone won't ask for "Password" - enter the unlock code anyway 
OR if phone shows "Insert Correct SIM card"

1. Power on with a non accepted SIM card
2. Type in #0111*CODE# where CODE is the unlock code you received from us.
3. Press the SEND key, display should read, "Personalization Cancelled"

i607 Blackjack 
Power on with incorrect (non accepted) SIM card, when asked to enter network pin enter provided unlock code. 
No need to hold other keys while entering code 
If you are unable to connect to the service provider or unable to make out-going calls or receive messages, this has nothing to do with your phone being locked. You need to force the Blackjack to change to GSM mode:

1.  
   1. Power on the phone
   2. Enter *#1546792*#
   3. Select Option 3 Network & Call Settings
   4. Select Option 5 Network Mode
   5. Select GSM