Samsung Galaxy Core Mini 4G

[nighthuntermurimbika]

How do I use 3G network on my Galaxy core mini 4 it has no option for selecting it . is there anyone who knows engineering mode or secret code to sort it out

 

[PhilipX20]

By default, you should be able to find it under the network SIM card settings. I did look up the phone on Google and seems kinda oldy but it should still be capable to, I recall Nokia's pre-Android days ran 3G, iirc.