Universal Secret Codes Sony Ericsson

Getting your IMEI (International Mobile Equipment Identity):
Number: *#06#

Access Software version:
> * < < * < *

Reach last dialed numbers:
0 then #

The Sony Ericsson Secret Menu screen:
-> * <- <- * <- *

Change to Default Language (English):
<>

Info about SIMLOCK:
< * * <

Opening phone without a SIM card:
**04*0000*0000*0000# followed by on ‘Wrong Pin’ number