Question about Nokia E71 Smartphone

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How can i use a AT&T sim card in a centennial Nokia E71 cell phone? when i put the sim card in it keeps saying sim card registration failed. I asked centennial about it and they said they dont have lock codes on their phones but to try 12345 for it is the nokia defult code.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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JAN_yuanjia
  • 470 Answers

SOURCE: My SIM card is active in other phones but when i

try to insert another sim to your fon, then if it is not, the power IC has the problem

Posted on Apr 04, 2009

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270rexton
  • 762 Answers

SOURCE: My nokia e71 is asking for a lock code when i try to restore my factory settings

12345

Posted on May 30, 2009

VinayT
  • 1884 Answers

SOURCE: nokia 6010 security code

Obviously it is not the original code. You may have changed it inadvertently. Now that you have forgotten it, the only way out is to get the firmware re-installed.

Posted on Aug 22, 2009

Testimonial: "sorry i am just now responding. Your solution was not what i wanted to hear, but very helpful. thank you"

Geekman
  • 32281 Answers

SOURCE: i forgot my phone security code of nokia 3315 cell

When you place a new or a existing SIM card from another phone provider into your mobile phone and it asks for a Security code then :-
This phone is locked to the original mobile phone provider. You need to contact this mobile provider to ask for the unlock code (security code) for this phone. You need to provide proof of ownership etc and the phone's unique IMEI number which is located inside the phone under the battery. They use this number to generate the unlock code for your phone.
They should provide you with instructions on how to enter this code into the phone.
Once you unlock the phone, then you can insert a new SIM card in this phone or sign up with another phone provider using this phone.

Posted on Nov 23, 2009

  • 105 Answers

SOURCE: nokia 5800 locked to orange unlock code,it keeps

If it showing you that sim card registration failed then then make sure your sim card is work or not. if your same Sim card works in different phone. it could be that your phone has been blocked by the network

Posted on Jan 04, 2010

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Sim card registration failed


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I belive you got a new sim card.sim card registrations fails comes only when the delear from whom you purchased might havent gave your proff to the service providers. so please contact the delear from whom you got the sim card.

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