Unlocking Samsung SM-B550H

[Solky55]

I have a Samsung SM-B550H locked to O2. I requested an unlocking code from O2 and entered it into the phone so I can use other sim cards. The phone is still unable to work on other sim cards apart from the O2 card. I have no error message. I called Samsung for help and spent nearly 1 hour on chat and Samsung could not help and asked me to speak to O2. Can anyone help how I can unlock the phone? Do I need a defreeze code or any other code? And do I need to request unlocking code again if I have entered it too many times.   

[jonsie]

It sounds like it's hard locked now and you will need a MCK code

@Martin-O2  @LukasB any help you can offer?

[MI5]

@Solky55 

If it's hardlocked due to too many incorrect attempts you need @Martin-O2 @LukasB or @TheresaV to get an MCK code for you.

Check the process to ensure you have requested the correct code though Guide: Unlocking an O2 phone to use a different SIM card 

[LukasB]

Here to help @Solky55 - I will send you a private message on here as I will need some information. 

Thanks for the tag @MI5 @jonsie 

[jonsie]

@LukasB 

[Solky55]

LikasB & M15 for the quick response. How safe am I to provide my personal information requested? Nowadays one has to be very careful. Please do not take it wrong, just making sure.

Thanks for understanding.

[LukasB]

You will be in safe hands with me @Solky55 - We have done this a few times 

[MI5]

@Solky55 

You're welcome and although @LukasB looks a bit dodgy, he's not at all 

[jonsie]

Yes you're welcome @Solky55 

[LukasB]

Thanks @MI5