Just got my lg g3 yesterday and having issues getting this to work. Coming from and old htc it was easy as going into the contact and hitting block.
I have figured out how to block calls from this number but blocking texts i cannot do. I have found how to block through both the call app and the call log by holding down kn the number. When i do this on a text in the message app the only thing that pops up is the contact and the delete option.
Please help me find spam directory you are mentioning. I have the lg g3 from sprint runing 4.4.2 .