.how can i unlock my LG KG90c (similar to KG800) using Philippine sim cArd

To Unlock the Phone from the Network lock use the Unlock code,You can get the Unlock code from here Wickedunlock.com
and Unlock it step by step using the instructions below:
LG KG800 Unlocking InstructionsWarning : Do not enter any wrong unlock codes on your LG KG800 mobile phones. If you enter over a certain amount of wrong unlock codes on your LG KG800 mobile phone, your phone may get hard locked and sometimes become unusable.
1 - Switch ON your LG KG800 with its ORIGINAL SIM Card.
2 - Then compose : 2945#*7101#.
3 - In the menu that appears go to "Settings".
4 - Then select "Security".
5 - To finish select "SIM Lock" and Enter the Unlock Code.

ORIGINAL: We mean, to use the sim card that was originally given to you by your network/service provider along with the LG KG800.

You can purchase the unlock code on ebay for $16.99 here is the link:

http://cgi.ebay.com/Unlock-Code-LG-KG290-KG800-KM500-KM900-KP100-KP170-/170469156103?cmd=ViewItem&pt=PDA_Accessories&hash=item27b0c0e507

I have CDMA mobiles like LG RD 3000.. All they accept only Reliance CDMA sims. I want to enter another CDMA sims in them! I havn't any data cables, but I know sim can be unlocked by codes also.. So, I asked somebody for help! I'll be always greatful for this!

To Unlock KG800/LG
1. Insert sim from the network that it is locked to.
2. Turn on phone
3. On home Screen, Slide up phone
4. Type 2945#*#
5. ENG. Mode menu should appear
6. Go Down to Factory Reset Select it, may take a few minutes to reset!!!!!
7. This will reset the phone back to before the Phone was locked to a network
8. The phone will automaticaly Restart(Note The Network Logo At start up will not change)
9. Now insert Any simcard(Not tested with 3 sims)and the phone should turn on normaly
10. The phone is now unlocked and you can customise the setting as you like.

PHONE UNLOCK PROCEDURE

Please follow the instructions below to unlock your LG KG800 handset:

1. Insert a Vodafone Australia working SIM card.

2. Ensure the phone is charged and then switch the phone on.

3. Enter 2945#*7101# while in standby mode

4. Select Menu, then go to Settings > Security > SIM Lock > Network

5. Select Deactivate and enter the 8-digit NCK unlocking code provide for your handset..

6. The handset will be unlocked automatically and will display "Done".

http://www.textbaysims.net/uk/sim?mexico

SEE here "Iphone desbloqueado con Telcel Mexico"
does it help? plz let me know.

PHONE UNLOCK PROCEDURE

Please follow the instructions below to unlock your LG KG800 handset:

1. Insert a Vodafone Australia working SIM card.

2. Ensure the phone is charged and then switch the phone on.

3. Enter 2945#*7101# while in standby mode

4. Select Menu, then go to Settings > Security > SIM Lock > Network

5. Select Deactivate and enter the 8-digit NCK unlocking code provide for your handset..

6. The handset will be unlocked automatically and will display "Done".

In which country did you buy it? For Australia try the following.
PHONE UNLOCK PROCEDURE

Please follow the instructions below to unlock your LG KG800 handset:

1. Insert a Vodafone Australia working SIM card.

2. Ensure the phone is charged and then switch the phone on.

3. Enter 2945#*7101# while in standby mode

4. Select Menu, then go to Settings > Security > SIM Lock > Network

5. Select Deactivate and enter the 8-digit NCK unlocking code provide for your handset..

6. The handset will be unlocked automatically and will display "Done".

Try this method and tell me if it works with you:
To Unlock KG800/LG Chocolate
1. Insert sim from the network that it is locked to.
2. Turn on phone
3. On home Screen, Slide up phone
4. Type 2945#*#
5. ENG. Mode menu should appear
6. Go Down to Factory Reset Select it, may take a few minutes to reset!!!!!
7. This will reset the phone back to before the Phone was locked to a network
8. The phone will automaticaly Restart(Note The Network Logo At start up will not change)
9. Now insert Any simcard(Not tested with 3 sims)and the phone should turn on normaly
10. The phone is now unlocked and you can customise the setting as you like