Revision 1 as of 2013-04-17 12:58:13
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|If you just bought a Sony Ericsson XPERIA it can be good thing to check whether its simlocked or not. The procedure to check if a Sony is locked to a carrier is not described in the manual and uses a special code to enter a menu where this easily can be determined
With the phone powered on:
Open the dialer and enter the following sequence:
Now a menu will appear with a collection of sub-menus.
Choose the menu: SERVICE INFO.
Choose the menu: SIMLOCK.
In the SIMLOCK menu there will be 5 rows:
 Network subset
 Service provider
If there is one or more rows marked by an “X” , that means that your Sony XPERIA is locked to a carrier. If all the rows are “empty” then your Sony XPERIA is locked to a carrier and you can change simcard in it as you wish. This method is universal at least for all phones in the XPERIA series.