I bought a LG G3 D855 model form someone who had bout it from carphonewarehouse.
It works with all network sim cards including, virgin, tesco, lyca but it will not recognise my 3 sim - keeps saying insert sim, no signal and sim icon with cross is shown.
It is running Lolipop 5.0 and V20h
How can I get it to accept my 3 sim? (this sim works perfectly in s4 nexus 5 - also tried a new 3 sim in this LG G3 to no avail)