Sony Ericsson is a joint venture created in 2001. If you purchased a Sony Ericsson mobile phone through a network carrier, then it came locked. This is done to ensure that you don't switch to a different provider. This means that in order change carriers, you will need to get your phone unlocked.
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Things you need
- Sony Ericsson unlock codes
- SIM card
Get the IMEI (international mobile equipment identification) number from your phone. Do this by removing the battery cover from your phone and taking out the battery. Beneath it is a 15 digit code written on a sticker. This is your IMEI. Write it down on a piece of paper.
Choose a website that sells unlock codes for Sony Ericsson phones, such as Unlocking.com. As of 2010, you can purchase a single code for £9 to £19.
Go to the site and type in your IMEI number. Choose Sony Ericsson as your phone's manufacturer, select the model and if necessary enter your mobile service provider. Provide your e-mail address, pay for your codes and wait for them to be e-mailed to you.
Open your e-mail and retrieve the code. Write it down.
Remove the battery from your Sony Ericsson phone and take out the SIM chip. This is where the memory and network information for your phone is kept. Replace your SIM with a new one. You can either purchase one from a local mobile phone store for about £13 as of 2010, or simply borrow one from another phone.
Turn your Sony Ericsson back on and type in the unlock code. Press the "OK" button and wait for it to reboot. When it comes back on your phone will be unlocked.
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