Is it possible to unlock iphone 5 when jailbroken?

I have purchased a new iphone 5 (currently locked on a uk network. It is not yet possible to request an official imei unlock from this network)

Once I jailbreak (using evasion), is it possible to unlock the iphone?

I recall being able to do so shortly after the iphone 4 was released in 2010

Tried googling, but could not find any info

DerekRod said:

Nope Ultrasn0w last supported the iP4 and only one rare baseband your best bet is a gevey sim or finding a website that performs the unlock

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Thanks, checked out the gevey sim, doesn't appear to be out for iphone 5 yet