How do I buy an unlock code?

i need an unlock code for my blackberry Z10

If you're the first buyer of the phone, contact your carrier first and ask them if they will unlock the phone for you. Carriers in some parts of the world do that for free.

If not, there are a lot of places online, just do a web search for 'blackberry z10 unlocking.' Just make sure that the place you pick has a money back policy in case the unlock code doesn't work.

I've used BlackberryCodeSource.com to unlock several BB 10 devices. They were quick & easy.