How to unlock a locked iphone?

How to unlock a locked iphone?

Ask your carrier to unlock it
Take it to a local phone store
Ask apple to get it unlocked
(You have to pay for these)

Take it to slough

What kind of lock has your iPhone been locked up with? If it is a network lock, you can unlock it using remote unlocking service. You can get the remote unlocking service for an iPhone from http://www.classicunlocking.com/apple/rs5wp8/ this method of unlocking an iPhone is safe, simple, affordable, quick and permanent. It doesn't require a jailbreak too.