First round was a a written test in android and some basic programming questions.2nd round was with one of their engineers,I guess he is not experienced with android development he asked age old legacy problems in android such as using tabs without fragment.We continued the discussion with machine test where they asked to code messaging kind of an app using firebase.They are just looking for candidates who know how to use firebase.I lost interest during machine test because there is no structure or process in which way the interview was going.Moreover, you need to be assessed by an Interviewer who knows the subject or at least has hands-on experience.Interviewers were underprepared.