Create a feature that allows users to select the languages they speak so that they can filter who they're able to communicate with. This also prevents the hassle of trying to figure out who speaks your language and who's using an online translator or who just ignored your message because the other person didn't understand you due to a language barrier. Furthermore, in the event that you decide to meet up with someone where there's no wifi connection, and this person doesn't speak your language, everything will be lost in translation. While a person's location does help to provide context clues, it doesn't always provide us with the information about what languages the other party speaks.