Universal Sony Ericsson Secret Codes

Having problems figuring out how to do stuff on your sony ericsson phone? well this may help!
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