Please help! My bro gave me his phone but when i swirtch it on it's asking for sim lock code I don't have the manual and my bro said he's doesn't know the code lease help!

For this problem contact the mobile service provider,........

You should call your operator and ask for the PUK, there is no other way. PUK is SIM related, so they will know your PUK code. Don't trying guessing it, you will have to take it to service if you type in a wrong PUK!

If the Phone asks for NP Code means It locked to Network ,You need to Unlock it,Get the Unlock code at here Wickedunlock and Unlock it check code for Your Network Lock,Model,Brand,Country it locked now?I don't know NP Code ..It can get from Online site,Because it based on Your Network,Country Lock,IMEI Number,Model,brand,Gather from Network Data Base.

Default pass code for Samsung SGH t359 is 0000 or 00000000. If these numbers doesn't work, you have to ask your friend the lock code she/he entered. If nothing has worked, call your service provider or the Samsung Support Hotline at 1-888-987-4357.

Have you tried another sim card? Maybe it's just the sim card that's locked

You have entered the wrong SIM password so it is locked. You can unlock it easily. You have to call your network service provider and ask for PUK code. They can ask you SIM no. which is printed at the back of SIM card.
Then you can enter the PUK code and use the phone again.
Revert in case of any problem.

n73 lock code

the PUK code is a code to unlock the sim card, when you enter the wrong sim pincode to many times it locks the sim. Call your provider or go into a store and ask them for a puk code they will give it to you.
and when your talking to them make sure you get the default sim pin code so it doesn;t happen again.
They don;t mind giving it to you, but it can only come from the provider.

go to settings-general-locks-phone lock-protection
and turn it off the default password for se is 0000




good luck!!!!!