Hello i just restore my iphone3g with 4.0.1 my device is from canada and i m in uk itunes need the supported sim card to activate my device and that can be a canadian sim card so any chance to activate i already try my orange sim to activate but nothing happen i m using t-mobile sim card

Confirm the device is not locked to an opposing carrier, that the SIM is activated by a carrier, and perform a restore through iTunes. If that fails the device may need to be replaced.

Sure you can, but before you must unlock it
http://jailbreak4iphone.com
This will help you to unlock any kind of iPhone.

You can unlock an iPhone 3G through remote unlocking method. This method of unlocking is safe simple and affordable. You can get the remote unlocking for an iPhone 3G from www.Classicunlocking.com . Here are the steps for unlocking an iPhone 3G,
1. Wait for to send you an email saying your phone has been activated or remotely unlocked.
2. Install the latest version of iTunes.
3. Make sure your Apple iPhone 3G phone software is updated to the latest version using the iTunes software.
4. Connect your Apple iPhone 3G to iTunes with a NOT ACCEPTED SIM card.
5. Wait until iTunes detects your Apple iPhone 3G.
6. Disconnect your Apple iPhone 3G and reconnect it after 10 seconds.
7. Your Apple iPhone 3G is now unlocked.

For this problem contact the mobile service provider....

This device will not preform any other function until it is connected to the computer with a valid SIM card in it. The device will then need to be activated with an AT&T (if in the United States) account. Only then will the device function normally

Hi there,

Firstly, because your phone is now jailbroken the software may now be faulty and you may have recurring problems with it.

But you should restore your iPhone as a new iPhone, it will wipe EVERYTHING, from the phone but it will also mean your working from a "clean" phone as it where, it will put it back to how it was from the day you took it out of the box.

Follow the details below to restore your iPhone as a new iPhone and then connect it back up to itunes with the sim inserted to activate it, also if you receive any messages on itunes about carrier settings, choose to update as these are what you need to have your network function. Although as I mentioned earlier, I cant guarantee you that your phone will be working and sorted as it is now jailbroken and doing this permantly alters the phones software.

Hope this helps (please leave feedback)

1 - Load up lateset itunes on your computer
2 - Power down your phone completely - swipe to power off
3 - Hold down the home button (circle button on front of phone) for around 6secs and still holding down connect to the computer
4 - When you receive a message on itunes saying that an iphone has been detected in recovery mode and needs to be restored. Continue with this
5 - On the summary page select the restore option

1. When prompted to back up your settings before restoring, select the Back Up option. If you have just backed up the device, it is not necessary to create another. **dont worry if your not asked to do this, you are restoring your phone as new so a back up isnt needed**
   
2. Select the Restore option when iTunes prompts you.
   
3. Once the restore process has completed, the device restarts and displays the Apple logo while starting up:
   
   After a restore, the iPhone displays the "Connect to iTunes" screen. Keep your device connected until the "Connect to iTunes" screen goes away or you see "iPhone is activated." If iTunes does not have an Internet connection, you cannot complete this step.
   
4. The final step is to restore your device as a new iphone
   
   
   

Firstly try your sim in another phone and see if it works...if NOT then the problem is with the sim and you need to contact your network provider. If it Does work then you will need to restore your phone as a new iphone wiping all data and re-activating it.

Hope this helps!

Use the following steps to restore your iPhone.


***** IF YOU CANT SEE YOU IPHONE IN ITUNES OR IT IS STUCK AT THE APPLE LOGO - POWER DOWN YOUR PHONE - HOLD DOWN THE HOME BUTTON FOR AROUND 6SECS WHILST CONNECTING TO ITUNES - RELEASE BUTTON - ITUNES WILL THEN APPEAR WITH MESSAGE SAYING IT HAS DETECTED IPHONE IN RECOVERY MODE & CONTINUE TO RESTORE YOUR PHONE - FOLLOW FROM STEP 6! ) *****

1. Make sure you have the latest version of iTunes installed and running before attempting to update.
2. Connect your device to your computer.
3. Select your iPhone when it appears in iTunes under Devices.
4. Select the Summary tab.
5. Select the Restore option.
6. When prompted to back up your settings before restoring, select the Back Up option (as seen in the image below). If you have just backed up the device, it is not necessary to create another.
   
7. Select the Restore option when iTunes prompts you (as long as you've backed up your device, you should not have to worry about restoring your phone).
   
8. Once the restore process has completed, the device restarts and displays the Apple logo while starting up:
   
   iPhone only: For the iPhone only, after a restore, the iPhone displays the "Connect to iTunes" screen. Keep your device connected until the "Connect to iTunes" screen goes away or you see "iPhone is activated." If iTunes does not have an Internet connection, you cannot complete this step.
   
9. The final step is to restore your device from a previous backup. Once your device is restored and-in the case of the iPhone-in the process of activating, you should be able to see the following in iTunes:
   
   Select the backup you want for your device and select the Continue button to complete your device's restoration.

If you do not want to restore from backup, select "Set up as new...

do as it says you need a valid SIM to restore an iphone and it is possible to have a SIM go bad. There is nothing that can be done until your sim is infact working and valid and it MUST be an AT&T sim no other sim will work for restore.

Are you using AT&T? If not the phone needs to be unlocked and "hacktivated". The mode your phone in now requires an AT&T SIM and iTunes to activate the phone.

what sim card are you trying to use after the restore in itunes and also when you finished the restore in itunes did your iphone come up with a message saying iphone activated?

go here click here and tell him what has happend this chap is a god with iphones he actually makes his own software etc for iphones.