Can i get a free unlock code for my iphone 4 please? :)

i would try the sim in a unlocked phone from a friend first if it works then buy your phone

There is more than an issue to cause this. 1st that some iphones are locked on a specific operators, with a contract for one or couple of years. after end of contract you can unlock the iphone at the operator and can use any sim card. 2nd the sim card it self may be damaged & cannot be read by iphone, please try it in another phone and see if it is working.
To know if your iphone is officially locked/unlocked by the model number, you can google it.

Jailbreak the iOS at your own risk. It's free.
Ultimate jailbreak and unlock wizard jailbreak and unlock iPhone iPad...

Unlocking an iPhone 4 using software is very risky. You have vulnerable chances to brick your iPhone 4 while trying to unlock it using software.
The safest and easiest way to unlock an iPhone 4 is to unlock using remote unlocking service. You can get the remote unlocking service for an AT&T network locked iPhone 4 from www.prounlocking.com at affordable cost with easy unlocking guide. This is a permanent unlocking method and doesn't require a jailbreak too. Good luck mate.

if you want to free code ,you can search on net by wriiten iphone 4 code ,you must be find your unlock code.

You can unlock an iPhone 4 locked to Vodafone UK through remote unlocking method. This is the safest and easiest method to unlock an iPhone. It is also an affordable method too. You can get the remote unlocking for an iPhone from www.Classicunlocking.com at affordable cost. This site is a legit source to rely on accurate unlocking solutions at reasonable cost. Unlocking method is very simple here. You will get complete guidance on unlocking process from here. All the best mate.

My opinion will be dont go for free unlocking and risk with your iphone even though unlocking iphone has become common one still there are many who face some problem while unlocking..there are many software available to unlock an iphone and many ways and one of my friend unlocked his mobile by remote unlocking method and he got it done by Unlocking4u and unlocked safely without any problem..

The Apple iPhone 4 starts at $199 on contract with AT&T or Verizon for the 16GB version, $299 for the 32GB version. Unlocked without a contract, new, they go for $599 and $699 respectively.

Nobody gives you free , codes generated based on imei,you can unlock your phone at reliable cost ,try here http://www.superunlockcodes.com/apple-iphone-3g/rs12wp9/ for unlock codes

yes,but i dont knw how