My iphone 3g is disable and I don't know the passcode can it be unocked

It's easy to see if u have a 3g or not look for the compass app. If it's there you have a 3g.

You will have to restore it with itunes and resync it. Unfortunately its the only way to get through the phone without a password

You will need to put the phone in recovery mode, wipe it, and then restore from a backup. See here for step by step instructions:

http://osxdaily.com/2011/01/16/forgot-iphone-passcode-how-to-reset/

iPhone setting:*
- Auto-Lock: 1 Minute;*
- Passcode Lock: On, require passcode immediately, after 15 min or 4 hours etc;*
- Network: Turn 3G Off

Scenario 1: Home screen is active with screen on*
1. Press power button for seconds until asked to '"slide to power off"
2. Slide to power off
3. press power button to turn on iPhone
4.*When asked to enter passcode, touch the "Cancel" key, then slide to unlock
5. bypassed passcode

Scenario 2:*
1. On the screen of being asked to enter passcode, press power button for seconds until asked to '"slide to power off"
2.*Slide to power off
3. press power button to turn on iPhone
4.*When asked to enter passcode, DO NOT touch any key on the screen, press power button for seconds until asked to '"slide to power off"
5. Slide to power off
6. press power button to turn on iPhone
7.*When asked to enter passcode, touch the "Cancel" key on the right bottom corner, then slide to unlock
8. bypassed passcode

Notes:
1. When Network setting changes to Enable 3G: ON, "3G" signal shows up, passcode CANNOT be passed through
Go to a underground parking lot or a lift where 3G signal is weak, when 3G signal switches to "E" (Edge), passcode CAN be passed through following above steps
2. When no 3G or Edge signal, above steps don't work

Conclusion:
Seems passcode security is related to network status
Possible security hole under Edge

forgot iPhone 3G passcode? The tutorial will help you much: http://www.windowspasswordsrecovery.com/iphone/forgot-iphone-passcode.html

if its a iphone from at&t u have to bring it to them they have to change the sim card i know it sucks

Turn your phone off and plug it into your computer holding the home button down. That will put your phone into restore mode.
http://www.mobileease.co.uk

how do i find out what my passcode is

Here are your instructions from the website below.
Reset your iPhone Passcode:
If you have forgotten your iPhone's Passcode you will need to restore your phone via iTunes.
But first you have to put your phone into the restore mode which is a slightly fiddly process.
Plug your iPhone into your PC or Mac with the USB cable
Press and hold the power button at the top and then slide to power off the iPhone
Press the power button to power the iPhone on and keep it held while simultaneously pressing the home button
After a few seconds a yellow alert triangle will appear and the iPhone will say it is iPhone Restore Mode.
Open up iTunes and click on the Summary tab
Click on Restore to restore your iPhone. This will reset all your iPhone's setting to the factory defaults, including the Passcode. You should then follow the steps above to activate the Passcode with a memorable number http://www.knowyourmobile.com/appleiphone/apple_iphone_userguides/4684/how_to_password_protect_your_iphone.html Click on this link or copy and paste the complete link into your browser.
If I could be of further assistance, let me know. If this helps or solves the issue, please rate it.
Thanks, Joe


I’m happy to assist further over the phone at https://www.6ya.com/expert/joe_8b8c2cd6ce148309