Question about Samsung Cell Phones

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I am out of the country and want to use my cell phone with another sim card. When I try to use the new sim card it says that it is not a a correct simcard or valid one. Please tell me how to unlock code to could use new sim card. My cell phone is Samsung CE0168

Posted by nou tali on


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You can get the Unlock code for the Samsung C168 model mobile here and Unlock it.

Posted on Nov 11, 2010


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I think your Samsung Blackjack is locked with some particular network.You need to unlock it to use other networks.To unlock you can approach and specify the country,locked network.Based on the availability you can get the unlcok code along with free instructions.Once unlocked you can swap networks.

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Invalid sim for Pantech go phone

If the PANTECH says Invalid sim it's locked to network...You need to Unlock it..Specify the network it's locked now,country...Then get the Unlock code
at and Unlock it easily..You need to specify the correct Pantech phone model also.

Sep 22, 2012 | Cell Phones

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Insert correct sim card

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. 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

Jul 29, 2012 | Sony Ericsson Walkman W810i Cellular Phone

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I put a lime sim card it keep say insert correct sim card what is the correct sim card

If it says insert correct Sim card in the Phone means it locked to some Network,You need to Unlock it...You need to specify the Network ,Country,Brand,Model...then get the Unlock code at here and Unlock it...Then You can use any GSM Network Sim card.....

Aug 03, 2011 | Cell Phones

1 Answer

SIM card registration failed

There are several reasons that can cause this problem.
Sim card registration failed means it has been locked out by the service provider. Did you buy the phone NEW? If so take it back they will exchange it.If you bought it used, it has been reported lost or stolen before they sold it to you.
It is also possible that the "registration failed" message could be caused by a faulty SIM card not being correctly read by the phone.

Check if that SIM works in another phone (either an unlocked phone, or one that is on the same network), and also try another SIM in your phone - this would tell you whether the SIM or the phone is at fault in your case. A faulty SIM is an issue for your operator, a faulty phone would have to be repaired at a service point.

In countries like India, you need to register your SIM card. The cell phone company blocks the SIM if they don't receive the application within few weeks of activating the phone. Please check if this is case.
Take out the SIM and test it with a different phone, if the phone fails to read the SIM, get the SIM replaced. Few days ago this worked for a friend with a brand new Nokia handset here in Lagos, Nigeria.


Jun 28, 2011 | Nokia N900 Smartphone

1 Answer


Ill keep this short. If you are gonna be in that new country for a short while and then return back to the original country of your SIM card, then you can register for 'Roaming' with a local phone company there.

If you will now be living in that new country for more than a few months, then you might as well throw away your old SIM card and get a new one there with a new carrier (phone company). Cause Roaming is expensive and is mainly targeted for business travelling people.


Feb 23, 2011 | Cell Phones

2 Answers

I keep getting the message, Emergency calls only, when trying to call. This is a new for me, refurbished phone. Please help.

this message shows up when the sim card is locked... insert some other sim card and try calling.. if u can call successfully.. then u should solve the sim card problem

Apr 07, 2010 | Samsung SYNC SGH-A707 Cellular Phone

1 Answer

I had Motorazr2 v8 and facing the problem. It is not showing the network and displaying only 'Unregistred SIM. Plz help me.


problem can be solved.When you buy a new Sim card or a new phone from a different country, it show unregistered Sim.That means the Sim or the phone can work in your own country.

You will needs to contact the service provider of the phone or Sim card you are using to enable you use the Sim or phone in your country.

Take care.

Mar 17, 2010 | Cell Phones

1 Answer

Country code

Your Canadian provider locked the phone, so that you may only use their SIM-cards in your phone. This is common practice. Consult your old provider for the unlocking code and instructions, the other solution is to take your phone to a proffesional unlocker and have him unlock the phone for you. Only problem with that is that the warranty on your phone might be void after doing that.

Sep 20, 2007 | Sony Ericsson Walkman® W880i Cellular...

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