And how can i check if my phone if branded?
Branded Phones = Some network providers place their own ringtones, themes, icons, links etc within phone's software. (eg. vodafone, orange, t-mobie, rogers, cingular etc.) Debranding means removing all this content and restoring phone to it's original factory SONYERICSSON condition. This will not damage phone in any way! You will loose Operator Icons, and links, WAP, and MMS settings however these you can get via Sony Ericsson - Sony Ericsson

select Region ---> Country ---> Support ---> PHONE SETUP

Nice day