Welcome to JustAnswer!
My nickname is Todd and I will be the expert working with you today to help resolve your problem.
If you never changed your password, try to enter default password. The default password for the phone are "0000" or "00000000" (4 or 8 zeros), 1111, 1234, 9999.
If you changed your password, there is only one solution we can try online. Please follow the steps below:
1. Turn off your phone
2. Remove battery
and SIM card.
3. Replace battery, not the SIM card.
4. Turn on your phone and type this code *2945#*#
5. Press Talk/Send key.
6. This should reset your phone to the factory settings.
If you are not able to enter code (for any reason - locked menu or phone do not recognize # symbol) the only option to unlock your phone will be to "flash" your phone with specific tools and new software. Unfortunately, you will not be able to flash your phone by yourself. You will have to contact your cell phone provider, they have tools necessary to assist you.
Please let me know if you need more information.
Thanks for using JustAnswer!