My cousin has a htc g2 touch which she has forgotten her pin to unlock any suggestions

The SIM network unlock pin for every individual mobile phone is unique and based on its IMEI number. You can get the unique unlock code for a HTC G2 either from its respective network provider or from any trusted vendor online like TheUnlockArena.com at affordable cost. Good luck.

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..............UNLOCKING INSTRUCTIONS..............
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1. Switch ON your HTC G2 with a Not ACCEPTED SIM Card.
2. If your HTC G2 asks for a PIN code, then enter your SIM card PIN and press OK.
3. HTC G2 will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your HTC G2 is now unlocked.

Hi. You can unlock a HTC G2 safer and easier using unlock code. You can get the accurate unlock code for a HTC G2 from TheUnlockArena.com at affordable cost.

-<()>--<()>--<()>--<()>--<()>--<()>--<()>-
..............UNLOCKING INSTRUCTIONS..............
-<()>--<()>--<()>--<()>--<()>--<()>--<()>-

1. Switch ON your HTC G2 with a Not ACCEPTED SIM Card.
2. If your HTC G2 asks for a PIN code, then enter your SIM card PIN and press OK.
3. HTC G2 will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your HTC G2 is now unlocked.

Do you want to unlock your HTC MY Touch 3G from network lock?You can get unlock code from the site Theunlockarena.com and unlock it from service provider lock easily.After unlocking you can use with other GSM network sim card in it.

Hi, To which network has your HTC TOUCH VIVA has been locked to? You can unlock your HTC TOUCH VIVA safer and easier using unlock code. You can get the unlock code for a HTC TOUCH VIVA from www.onlinegsmunlock.com/htc-touch-viva/rs7wp9/ at affordable cost.
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UNLOCKING STEPS FOR HTC TOUCH VIVA
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1. Switch ON your HTC Touch Viva with a Not ACCEPTED SIM Card.
2. If your HTC Touch Viva asks for a PIN code, then enter your SIM card PIN and press OK.
3. HTC Touch Viva will ask to enter an "unlock code".
4. Enter Unlock Code we send to you.
5. Your HTC Touch Viva is now unlocked.

You can get the unlock code for your HTC Mytouch at TheUnlockArena.com very easily.

You need to give it to service centre. Only they can provide you a solution.

ur defalt phones codes is 12345 or 00000 u can use it
Default 4 Digit user code: 1234 or 0000
Default 6 Digit Security code: 123456 or 000000
Default 6 Digit Security code: 000999 or 1122
Type *#06# at the mobile screen to know IMEI no of your mobile.
send the IMEI no to me and i will reply you with unlocking code.
IF Problem not Solved So
Please New Software install in the Phone Problem will Solved
OR:
If For puk & pin cod problem So Please
Very Best Solution:You Go To Service & Sim Office and Get The Puk code And Pin code From Office oprator
Enter The Puk code and Yes
Enter The pin code and Yes
So Puk code Open and Problem will Quickly Solved

There can be many ways to Unlock your phone. As far as i know unlocking by codes is the simple and safe way. I will suggest the website Unlock-Zone.com which is doing good service and they were recommended highly in the cell phone forums.
I used them to unlock my cell phone. contacted them and within 30 mins i had my unlock code and my phone was unlocked.
Hope this helps.

look up how to restore your phone on google. This will definitely work, but will erase all files on your phone