How to Flash a Sony Ericsson K850I

Written by sarah haynes
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How to Flash a Sony Ericsson K850I
You can flash, or unlock, an Ericsson cell phone to use it on another network. (cellphone image by petar Ishmeriev from Fotolia.com)

It is becoming more common for consumers to use their cell phones on other companies' networks or use them overseas while on vacation. Almost every phone has the capability to be flashed, or unlocked, and used on other networks. However, phones are rarely sold unlocked or flashed. And, even if a phone is flashed, it still has to be used on the same type of network, either CDMA or GSM, depending on the carrier. To flash a Sony Ericsson K850I, you must obtain an unlock code.

Skill level:
Easy

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Instructions

  1. 1

    Locate the serial number of your phone. Take out the battery from the back of the phone and look on the sticker on the phone. It will be listed as the imei number, which is 15 numbers long.

  2. 2

    Check with your current cell phone provider to obtain the unlock code to flash your phone. Many providers will give this information to you as long as you are an existing customer and have been for at least 90 days.

  3. 3

    Look online for a service to unlock your phone if you were not able to get it from your current cell phone carrier (see References). Most of these services cost money, so this should be your second option. This service will provide the code needed based on the serial number of the phone you have.

  4. 4

    Press the "Menu" button, scroll over to the "Settings" icon. It should look like a wrench tool clipart image. Press the "Select" button.

  5. 5

    Scroll over to the "General" tab, select the "Security" option.

  6. 6

    Go down to the "Locks" selection, then to the subcategory, "Subsidy Lock" option.

  7. 7

    Enter the code given to you for the flash or unlock of your phone. Press "OK." You will now see the message that your phone is unlocked. You can now use it on the carrier of your choice that uses the same network.

Tips and warnings

  • Do not attempt to enter the code more than three times or guess the code because this will completely lock up the phone and it will no longer be usable.

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