I have been trying to figure this out. It just started recently. I have the verizon s5, rooted. In the same room the wifi has just started to randomly drop out. I have not dropped my phone or what have you. 2 days ago, no problems. I could even walk around my house while still being connected. Now if I leave the room I'm hit. I have not downloaded any apps. Can someone please help me trouble trouble shoot? We dont have the strongest encryption on the wifi. I really dont know where to begin. If only there was an app for this.