simlock, Cid (carrier ID) lock, network lock,, allmost the same thing,,, if a phone is cid locked, it can only flash roms from that carrier (easily bypassed by hspl) but it also means its locked to that carriers network, (not bypassed by hspl)and only way to unlock that is get a code from the original carrier or buy a code.
Once it is unlocked, it will still (and always will) be Cid locked to voda roms.(again not a problem, since hspl bypasses it)
Assuming its from voda, you should ask them first,,, however if you no longer have a contract with them they probably will say no,, also they can take a while to give you the code. 28 days for many operators,,, took o2 UK six months to unlock mine in 2010!!
Save yourself.hours of fruitless searching and spend the 15€ and buy a code online. Lots of threads here about various sites selling codes.
O2 UK (Contract) APN settings data & MMS combined
Various radios, stock roms and tools HERE
UK 3.14 hd2 stock roms on HTC.com
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