Question about Samsung SGH-R225m Phone

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Mobile locked my samsung mobile c140 has been gid locked that means i cant put other sim into it except the one i was provided along with the mobile. please help me i want to change my sim connection tell me how to unlock it.

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  • karthik chel Jul 26, 2008

    my samsung mobile c140 has been gid locked that means i cant put other sim into it except the one i was provided along with the mobile. please help me i want to change my sim connection tell me how to unlock it.

  • Anonymous Aug 15, 2008

    how to unlock samsung C 140 GID lock



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Well its simple you need to buy off ebay an unlock your mobile software (very cheap) hope it helps ...

Posted on Jun 01, 2007


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Sir its not a sim or network code it is a phone sim lock when i insert sim in samsung g-1080f mobile its sim code apear and that sim i insert on other mobile its work poroperly

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You mean your sim is locked with a particular network?You can get an unlock code for it and remove the lock.I suggest you to approach and get the respective unique unlock code by specifying the mobile model,country,locked network,IMEI no.They also provide free unlock instructions along with the unlock code.

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How do i unlock my sim card to use it in a new

Mobile phone manufacturers make GSM phones with a SIM lock, a built-in capability to restrict the use of these phones to specific countries and network providers. In this way, phones can be locked to only accept SIM cards from a specific country, network or service provider, or only a particular SIM type. In fact, most mobile phones are shipped with country and network provider locks these days. Unlock SIM card. It is now either mandatory or voluntary for the provider to unlock the SIM card of the customer. Still, some providers are reluctant on doing it even after a customer has fulfilled their service contract. A few others will unlock the SIM card of a customer only if he/she has an active account in good standing for at least 90 days. Some network providers charge a fee for releasing the unlock code. Unlocking laws vary from country to country. For example, in Belgium, networks are not allowed to sell locked handsets. In The Netherlands, providers must provide unlocking codes, but are permitted to charge a fee for this during the first 12 months after purchase. The Hong Kong government does not allow networks to sell locked mobile phones, though the restriction does not apply to some PDA phone models, such as those offered by BlackBerry. In the US, unlocking is now legal. Unlock SIM card and special codes. You can unlock a handset by entering a special code, or in some cases, over-the-air by the carrier. In most cases, a locked phone will display a message if a restricted SIM is used, asking for the unlock code. The code needed for removing all SIM locks from a phone is called the master code or network code key. The phone itself verifies the unlock code, which is either stored in a database or calculated with the help of a complex mathematical formula supplied by the provider.

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What Is The Master unlock Security Code Samsung SGH-C140 phon

Cell phones are limited to a certain cellular network. This means they are designed to work only with the SIM (Subscriber Identity Module)s for that particular network. Some phones can be unlocked, which allows them to be used on any network. Samsung phones have a unique unlock code which can be used to free them from their mobile phonemag-glass_10x10.gif operator
    About Locked Phones
  1. Only a few companies have lockable phones--T-Mobile, AT&T and Cingular. Mobile companies lock down phones to keep their customers from using their phones if they switch to other services. This keeps you from using the BlackBerrymag-glass_10x10.gif that you bought at Cingular with the T-Mobile network if you switch. Phones are normally only unlocked at the mobile company's store, but it is perfectly legal to unlock your own. The only exception to this is if your phone contract specifically states that you are not to alter or modify your phone, and that the phone is the property of the provider, not you.
  2. Unlock Your Samsung Phone
  3. According to, go to the Nokia Free Unlock Codes Calculator and download the program (see link in References). Install and run the Calculator. Find the manufacturer and model for your Samsung cell phonemag-glass_10x10.gif, then enter your IMEI (International Mobile Equipment) number. Find the IMEI number for your phone by dialing *#06#. Choose your country and cell phone provider and enter your number. A list of codes will appear. Try them until you find one that works for you.
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  5. Have a friend with a different network attempt to use his SIM card on your phone. If it works and your phone identifies her as the owner, your phone has successfully been unlocked. If not, go back and try another code. Also, check the information you put into the Calculator. If you made any errors, you might have gotten the wrong code for your phone. Correct the errors and try again.

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