Question about Samsung SGH-D820 Cellular Phone

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SGH-D820 screen displaying "Cingular Extend", when normally it would display "Cingular".

I am on the AT&T(Cingular origionally) Network. One day I awoke to find my Samsung SGH-D820 screen displaying "Cingular Extend", when normally it would display "Cingular". This could normally be corrected by going to the "Network Selection" feature, and after a short search, it would give me a choice of "Cingular Extend" or "Cingular" for my Network. However when I try to use the Network Selection feature, the choices that I am given are "Cingular Extend" or "T-Mobile" . "Cingular Extend" induces roaming charges and "T-Mobile" ,when seleced, reads "Not Allowed". How can I get the phone to give me an operational network?

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Re: SGH-D820 screen displaying "Cingular Extend", when...

Try resetting your phone to its factory settings..

Posted on Oct 17, 2007

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1 Answer

Sim unlock code

I suggest you can approach and specify the country,locked network of Samsung D820.Based on the availability you can get the unlock code along with free instructions.
Simple Unlocking Unlock the Samsung D820 mobile phone

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On the SAMSUNG SGH-ZV40 how can i change the ring tones. can i get a step by step guide as my screen has broken

Hi Lilfranza,

Menu structure is: Menu/Settings/Profiles/Normal Profile/Options/Incoming Call/Voice Call Ringtone see details below
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You can customize various sound settings.
1. When the Idle screen displays, press the Menu soft key.
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1 Answer

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3) Enter *7465625*638*00000000*00000000# (The zeros will be dashes)
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1 Answer

Hello Sir,Am Atul..i have SGH D820 mobile has display problem..i change the strip twice & it was working properly.But again showing display problem.So i think i need to format the

Are you sure formatting your phone will solve the problem? I think the problem is from the flex that connects the screen to the phone's main board. Usually slide phones give this kind of problem especially samsung phones.

Trust me, and give this a trial.

And please what do you mean by "strip"?

Take care

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1 Answer

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1 Answer

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1 Answer

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Insert ANY unaccepted SIM card in the phone and then turn the phone on, follow the steps in 1 to 4 below to enter all the codes. The phone will states "Wrong card" at the end of step 2 and "network lock deactivated" at the end of step 4 if you do everything right so pls take your time to enter the code or follow the instruction correctly at each step. When entering some of the zeros at steps 3 and 4 your phone may display the zero as hyphen or minus (-), dont worry, just count when entering the zero to ensure you enter just the right numbers of zeros. Now let's begin... 1/ Put any unaccepted SIM card in your SAMSUNG SGH Phone, turn the phone on, it will display "WRONG CARD"

2/ At the wrong card screen, type *7465625*638*00000000*00000000#

3/ Now remove the battery with the SIM card, Put the battery back and turn the phone on again without the SIM card, it will display "Insert SIM card" 4/ At the insert SIM card screen/end of step 3 above type #7465625*638*00000000#

At the end of step 4 phone will show "network lock deactivated" 5/ Now Reinsert your unaccepted card or any other unaccepted SIM card in the phone and enjoy your unlocked phone!

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Whenever, this kind of problem appears try to restart your camera or phone .

Thank You

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unfortunately, the board of your mobile phone has corroded. When the water dried up rust was developed. try cleaning the board of your phone...

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