Since getting my S6, I've struggled using apps that require an internet connection as my connection drops frequently. I had thought it was due to my location, but recently I was in downtown Washington DC for a week and had full bars on a 4G connection the entire time, but the data still dropped frequently. I've even reset my phone a few times, and the problem persists. Today, I took out my SIM card and put it back in, hoping the might do something, but it didn't. Help!