In an interview with Pigeons & Planes, Khalid said about this song: "‘Location’ is a story of young love. The kind of love that you would travel all over the country to find. It’s just a story of searching for something that we all want in life no matter who we are and that’s a real genuine lover, but it doesn’t come easy."
Interview can be found here: http://pigeonsandplanes.com/music/2016/05/khalid-location
To me, this song is about falling in love so fast, you have to get a general idea of where you are in the relationship. When he says, "Send me your location", he's asking her "What are we?" or "Where are we in our relationship?" and he doesn't know where they are in the relationship (which is why he is asking her), so the line after "Send me your location" is "Let's focus on communicatin'." (I don't know where we are.) So, so far, our "translation" (if you will) is telling us "Where are we in our relationship/What are we because I don't know where we are." The rest is kinda straight-forward: she has sex with him, answering his question in the first place.
My summary for this song is simple. It's about a couple that don't know they're a couple. They have no idea where they are in the relationship and it's kind of a scary feeling, so this song is about getting out of the stage in your relationship where you are scared shitless (because there's a chance that he will leave the relationship a sad and broken man) and have no idea what the next move is, as far as who I identify myself with this person (Am I her friend, boyfriend, etc.?). The end kinda takes the pressure off. He eventually comes to the conclusion that he should make himself vulnerable to her, and she has sex with him. I guess the question of this story is also it's moral: Isn't it sort of humanizing to be vulnerable to at least an extent?
Haven't you used an iPhone? He's obviously trying to ask this girl for her location. It doesn't get any easier than that.