We have teamed up with the folks behind FastGSM, the phone unlocking company, to give away a free sim unlock to 25 lucky readers. Many people can get stuck when figuring out how to unlock their Xperia handset, but FastGSM has some easy-to-use unlocking software that will be accessible to all users. FastGSM supports users being able to unlock older handsets such as the Xperia X10 or the Xperia X8 as well as newer handsets (the full list can be seen below). To enter the competition please follow the instructions below. We will pick 25 winners randomly when the competition closes at midnight (GMT) on Monday 26 December 2011. Good luck! To enter the competition all you have to do is: – Follow us @XperiaBlog and retweet the competition: “Who wants to win one of 25 sim unlocks for your Xperia courtesy of @FastGSM? Follow and RT @XperiaBlog for a chance to win” [Click to Tweet] – Leave a comment in this forum thread with your Twitter handle. [Link will appear shortly] Rules: 1) Please register on the forum with a valid email address as we will be using this to contact you. 2) Once contacted, if we do not hear from you within 48 hours we will draw another winner. 3) This competition is open to our readers worldwide. FastGSM Xperia Unlocking Supported phones without Test Point: E10 – Xperia X10 mini E15 – Xperia X8 E16 – W8 Walkman U20 – Xperia X10 mini pro X10 – Xperia X10 SO-01B – Xperia X10 (JAPAN NTT DoCoMo) Supported phone with Test Point: LT15 – Xperia arc MK16 – Xperia pro MT11 – Xperia neo V MT15 – Xperia neo R800 – Xperia PLAY SK17 – Xperia mini pro ST15 – Xperia mini ST17 – Xperia active ST18 – Xperia ray WT19 – Live with Walkman Z1 – Xperia PLAY SO-01C – Xperia arc (NTT DoCoMo) SO-01D – Xperia PLAY (NTT DoCoMo) SO-03C – Xperia ray (NTT DoCoMo) S51SE – Xperia mini (JAPAN EMOBILE) Continue reading... UPDATE: The full list of winners can be seen here.