Is my phone unlocked?

[Coraya]

I had to by my father an unlocked LG G3 from Amazon.

It came in the mail today. I want to make sure it's unlocked. How do I check? Thanks for any info
I'm only worried because the back of the device carries a sticker that says 'unlock code (if needed)'

Posted via the Android Central App

 

[belodion]

Enter *#06# on the dialler to find your IMEI, then check that on the IMEI.info app in the Play Store, or here:
http://www.imei.info/