How to Unlock the Sony Ericsson Z300A Phone Online
- 1). Visit a website that provides cell phone codes for a fee (see Resources). Check to make sure the site has access to codes for the Sony Ericsson Z300A. You will be required to provide the site with your phone's IMEI number, a 15-digit number that should be printed on the back of the phone, beneath the battery. Make careful note of the unlock code they provide you with.
- 2). Remove the SIM card from your phone and turn the phone on.
- 3). Press the left arrow button once, then the * key twice, then the left arrow button once more.
- 4). Select which item you want unlocked from the displayed menu. Alternately, you may see the message "Personalize with MNC2."
- 5). Enter the unlock code. You should now be able to use your phone on any service provider's network.
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