How can i use my iphone even its no sim card install?

If you have problem in accessing with any specific SIM card in your iPhone, You can make a complaint to your network provider and get a new one.
If you are not able to access any SIM card in your iPhone, Take your iPhone to a local mobile store.
If you are not able to access any SIM card other than a specific SIM card in your iPhone, then your iPhone must be network restricted. You need to unlock it.
The safest and easiest way to unlock an iPhone is to unlock through remote unlocking method. You can get the remote unlocking for an iPhone from www.wickedunlock.com/apple/rs11wp8/ at affordable cost. This method of unlocking doesn't require a Jailbreaking too.
Here are the steps to unlock an iPhone,
1. Wait for us 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 phone software is updated to the latest version using the iTunes software.
4. Connect your Apple iPhone to iTunes with a NOT ACCEPTED SIM card.
5. Wait until iTunes detects your Apple iPhone.
6. Disconnect your Apple iPhone and reconnect it after 10 seconds.
7. Your Apple iPhone is now unlocked.

No Sim Card Installed Insert a valid Sim with no pin lock

FROM THE OWNERS MANUAL:
Installing the SIM Card
If your SIM card was not preinstalled, you must install the SIM card before you can use iPhone.

Install the SIM card:
1 Insert the end of the SIM eject tool into the hole on the SIM tray.
Press firmly and push it straight in until the tray pops out. If you don't have a SIM eject
tool, you can use the end of a paper clip.
2 Pull out the SIM tray and place the SIM card in the tray.
The angled corner of the SIM ensures that the card fits only the correct way in the tray.
3 With the tray aligned as shown, carefully replace the SIM tray containing the SIM card
in iPhone.

Actually, you can import contacts from SIM to iPhone with simple steps. Just follow below guide.

iPhone doesn't store contacts on the SIM card. If you want to transfer contacts between iPhones, you can use iCloud to backup or transfer content between devices. When it comes to import contacts from SIM card to iPhone, users will only need three simple steps.

1. Remove the SIM card from the old phone, and install it on your iPhone.
2. Your iPhone may need to reactivate. If so, connect to iTunes.
3. Tap Settings > Mail, Contacts, Calendars > Import SIM Contacts.
4. Wait for the import to complete.
5. If you swapped SIM cards in step 1, remove the SIM card and replace it with your iPhone SIM card.
6. Open Contacts and make sure that the contacts imported.

The contact information imported from a SIM card depends on how your previous phone stored information on the SIM card. For more help with importing contacts from a non-Apple phone, check the manufacturer's website, app store, or contact your carrier.After doing this, you will get the contacts in your iPhone. Transferring contacts from SIM card to iPhone is easy to be done when users have a suitable SIM card with iPhone. But if the SIM card cannot be recognized by iPhone, what should the users do to import contacts from SIM card to iPhone?


For more details, check: How to Transfer Contacts from SIM Card to iPhone

Try replacing you sim and if you still get the same error then it is a device issue. You will need to contact your service provider for replacement options!

u check is that compatibal , if it is it will work or else u pls jailbroke it from redsn0w and then install yellowsnow from cydia

SIM card slot is in top of iPhone. From iPhone Manual:

If your SIM card was not preinstalled, you must install the SIM card before you can use iPhone.

Install the SIM card:
1 Insert the end of the SIM eject tool into the hole on the SIM tray.
Press firmly and push it straight in until the tray pops out. If you don’t have a SIM eject tool, you can use the end of a paper clip.

2 Pull out the SIM tray and place the SIM card in the tray. The angled corner of the SIM ensures that the card fits only the correct way in the tray.

3 With the tray aligned as shown, carefully replace the SIM tray containing the SIM card in iPhone.

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.

Read guides here:

http://modmyifone.com/

Well, first off, an iPhone won't work at all with a T-Mobile SIM card. American iPhones are locked to AT&T's network -- only AT&T SIM cards will work in them.

As far as activating it with AT&T, make sure that the iPhone isn't connected to the computer while you install iTunes. Once iTunes is installed, connect the iPhone to the computer and iTunes should launch automatically and begin the activation wizard. Just follow the instructions on the screen and answer the questions.