Also, eye contact is important. How many times does the person you're speaking to feel they have your undivided attention? Turn off screens … get away from them. Eye contact is the quickest and simplest way to acknowledge Christ in the other.
Now, if you're having a 'conversation' through a screen, ask yourself if that's the best medium to be using to have that conversation. Words can be misread and mistaken. Do you ever text just 'because you don't want to get into a long conversation?' Go the extra mile. Don't text when you can call. Don't call when you can sit face to face. Don't sit face to face and have your mind in another area code. A huge part of authentic communication is emotional presence, not only physical presence.