I can not use the swipe down gesture of my phone. So its tough to turn on the wifi, change the profile etc. All I have to do to go all the way to setting then change the settings. In order to change the rotation I can't use the swipe down gesture..It gets to work for couple of minutes then again same as before. I have been facing this for last 4/5 months. Phone screen is completely fine with no damage. what should I do?I don't have any warranty by the way.