just browsing eBay and came across this unlocking service for £1.48 thought it was a bargain!! since networks charge you around £15 and have to wait for a week to get the code where as this takes around 5mins to 24hrs!
from the comments below it seems this deal is only hot for the HTC One devices because there is no S-off yet so you cant get it unlocked for free yet. or if you dont wanna root your device.
please dont vote cold if you have a desire since i mainly posted it for the One x. cant get s-off yet.
if you have a contract with o2 or Vodafone they will unlock your phone for free usually takes from 24hrs to a week for your provider to confirm your handset is being used in their network and provide you the code.
Vodafone unlock form http://campaigns.vodafone.co.uk/UnlockCodeRequestForm/ (thanks @nossa)
other networks charge you between £15-£20
a few devices they can unlock TITAN 2 II VIVID RAIDER ONE X VIVID ARIA MERGE RHYME EXPLORER AMAZE
seems like i am getting a lot of hate for this because for some reason some people think i am selling the codes when i am Not! so quite hating! if you don't like it then dont bother buying it simple i'm not getting anything of it. so whatever. its my first post be nice!