I have had a few people test both the map leaflet and also simply test MapQuest.com using Galaxy5s and 6s. All have reported to me that the pan/ zoom using the phone touch screen does not work. Not sure if this problem exists on other devices. I have seen it in the past when leaflet was embedded inside an app. But I think that problem was resolved a while back. However several people are specifically asking about Galaxy now (using Chrome). Is this a known issue and is there anything that can be done? I seems to me that Samsung Galaxy is becoming a very big player.