How can I get my phone working again in Australia (Samsung S5)?

[AC Question]

Unlocking a Samsung S5

Hi, I bought a Samsung Galaxy S5 whilst I was on holiday in the UK as my S4 broke while I was away.
Now I cannot use it back in Australia as all.

I have tried searching for answers but am not getting anywhere. I bought it from a Phone warehouse in Stratford Upon Avon. No plan etc so it came with no SIM card.

 

[Rukbat]

Re: Unlocking a Samsung S5

If the first SIM in it was a European SIM it could be region locked to Europe. You can buy SIM unlocking codes, but I haven't seen anyone selling region unlocking codes, and I don't think Chainfire's Region Lockaway works on the S5.