How do i unlock my samsung sch-u820 phone - Samsung Cell Phones

Hi Timothy.
i found this on the internet but if you do try this do so at your own risk.
How to unlock the Samsung Galaxy S Sch-r930? Posted on February 12, 2014It is very easy to unlock Samsung Galaxy S Sch-r930, it is also safest and non-invasive method of unlocking your phone. You need to provide IMEI number of your phone, if you want to get code for unlock Samsung Galaxy S Sch-r930. Type on keyboard *#06# or remove battery from your Samsung Galaxy S Sch-r930 to check IMEI number.
We provide all codes from Samsung manufacturer database:
Network unlock code
Unfreeze
service provider codeHow to enter code in Samsung Galaxy S Sch-r930 ?
You can enter unlock code in following ways:
One
1. Insert foreign (Unaccepted) Sim card
2. The phone should ask for unlock code
3. Enter Unfreeze or Defreeze code
4. Enter NCK or Network code
Two
If your phone does not ask for the unlock code:
1. Turn on the phone with original Sim card or without Sim card
2. Enter #7465625*638*NCK/Network#
Three
If your phone does not ask for the unlock code:
1. Turn on the phone with a foreign (Unaccepted) Sim card
2. Then enter the following sequence:
#0199*Unfreeze/Defreeze#
#0111*NCK/Network#
#0121*SCK/Subprovider#
#0133*SPCK/Provider#
The phone is now unlocked.
How to unlock your Samsung Galaxy S Sch-r930
1. Purchase the unlock code at www.CellphoneUnlock.net
2. Enter the required phone information and contact information
- 15 digit IMEI # (press *#06#)
- Network provider phone is currently locked to
3. The unlock code will be emailed to you!
Unlock Instructions
1.Power on phone with a non-accepted SIM card
2.Phone will display prompt to enter unlock code
3.Enter the unlock code provided by www.CellphoneUnlock.net and your Samsung Galaxy S Sch-r930 is unlocked!
.or go to this link and have a read up. http://www.mobiwhy.com/how-to-unlock-the-samsung-galaxy-s-sch-r930.html
or this one.
how to unlock samsung sch r930 Google Search

Hi, I have instructions to factory reset your device. Before doing so, I advise that you back up all of your data or else it will be erased.

1. From the standby screen, press Menu
2. Press Settings and Tools
3. Press Phone Settings
4. Press Security
5. Enter the lock code, default password is the last 4 digits of cell phone number
6. Press Reset Settings
7. Press Yes
   

Hope that helps.

-Jayme

Use the Samsung default factory code provided in the service manual. However, if you have changed the code, then there is nothing you can do on your own and you need to visit the service center.

You will have to call your provider and prove that you own the phone and the account and they will reset it

Did you try a hard reset?

Hard reset wont help you if its not hardlocked I guess its network locked if it ask for unfreeze/defreeze code then its network problem or else hardware problem. Try youtube for hard reset and www.guaranteedunlock.com for network reset.

@ raychel jst call yo network provider they will give it u.

Steps to Restore Phone

This will return phone to the default settings and permanently erase all user data, including pictures,videos, music, messages, contacts and downloaded applications stored on the phone.

1. From a Home screen, touch Menu ? Settings & Tools ? Phone Settings ? Security. Enter the lock code when prompted. The default lock code is the last four digits of your telephone number.
2. Touch 5 or Restore Phone.
3. At the prompt, touch Yes to reset and restore default settings, or No to return to the Security menu.

http://www.resetcellphone.com/how_to_reset_Samsung_sch-u820-reality

try contacting netwrok providers for Unlock codes

not possible at all