WHEN YOU INSERT DIFFERENT SIM CARD IT'S SHOWN THAT WRONG CARD....I WONDER WHY

First All Check:
1.Confirm whether same sim card is working in other h.s or not.
2.Make sure the sim slot is o.k. only try these two.
3.If all the above steps fails, check the SIM card connector pins for damage.
if so try to get serviced.
4.if ur sim card is good then it is problum form sim card ic u have u raplace it with SMD.
u can make it jumper mean u can fix this prob with out sim card is for this contact.
5.take sim connector slight up by pin then cheak by inserting sim.
6.hot air gun on sim i.c. then cheak it.
Last Option:
IF make sure that the sim card hasn't been damamged at all sO Please You Go to Service
& Sim Office and Get the Duplicate Sim Same Your No From Office Oprator
Problem will Solved Quickly

Factory lock code is 12345 unless you have changed it. Go to settings and set lock code to off.

Check the SIM card with another phone to see if there are any problems . If not check the SIM connectors and insert in the shown direction- it is possible to insert it wrongly.
If not I suggest that since your Phone is NEW it must be shown for warranty free service to Nokia service.

samsung mobile unlock code varies in different places so first select your place and download a unique code from the given link..
www.mobileunlocksolutions.com
then after getting the code swith on your mobile and insert a different sim card rather than your previous sim card and enter the code you got form the given above link..
if it shows insert correct sim card then follow these following steps
1.swith on your mobile with an invalid sim card..
2.dont worry of the information shown in mobile.
3.compose: #0111*your purchased unlock code#
your phone will be unlocked.......

well the phones locked to one specific carrier it wont work wen u put different sim cars in

Check your SIM CARD. If you place SIM CARD, upside-down or in wrong direction, then should message comes up.

Phone can use different type of sim cards as long as it is unlock. Is says SIM NOT VALID it is because it is sim locked to only network provider. This is the best thing to do. I will provide you a link to a website that offers unlocking service for any phones. Here it is pal: http://www.thephoneunlockers.com/
I am sure that it helps you a lot. :-)

If the display says "Insert SIM," it means that the phone has no contact with your subscription card (SIM card) that is inserted in the phone. We recommend that you remove the battery and the SIM card, and clean the connectors on the SIM card and the phone with a soft brush, cloth or Q-tip moistened with any type of unflavored colorless alcohol.
At the same time, check that the card is not damaged or worn in any way, in that case, the connector may not align with the connector in the phone. Please contact your operator / carrier for a new SIM card.

The puk code comes up if you insert wrong pin code three times.

If you are asked the PUK code you need to call the phone company that released the SIM card, they can retrieve the puk code from a database for free.
Or you can use the phone with a different sim card.

In your case you need to contact your SIM card provider technical support to unlock the SIM.


The PIN and PUK are related to the SIM card, not to the phone.

If you replace the SIM card with a different one, then the phone will not ask for the PUK anymore.

just flash ur mobile to unlock the overseas sim capability