How can I unlock my phone

[Spursman1882]

I have a Galaxy S3 running android version 4.3. I want to unlock it to give it to my daughter. I have tried *#197328640# but nothing happens. I have read that this code does not always work on version 4.3 software. Is there another way round this?

 

[Golfdriver97]

Welcome to the forums. You can try contacting your carrier to unlock the phone for your. What carrier is your S3 on and what carrier does your daughter have?

 

[Spursman1882]

The phone is on o2 but it is an old work phone on a business account. I would have to go through too many managers to get it unlocked. I have got a SIM from the Carphone Warehouse which is their own ID network (based on Three). Its only £5 for a rolling 1 month contract which includes 1GB of data, 5000 texts and 250 minutes. I need to unlock the phone so I can use the SIM.