Hello Tiru,
All visits contain page views, except under rare circumstances where a visit contains only custom link image requests. This anomaly is unlikely to occur unless the s.t() function is removed from your implementation and custom link tracking is solely implemented : In Mobile, for the cases like Life Cycle Tracking, Actions etc. Other than this edge-case, page views are always higher than visits.
Request you to verify the implementation for Life Cycle Tracking and other custom links in your application to debug.
Thank You!
Arun