I have 2tb Time capsule in my house as a Wifi router. Its kept downstairs foyer area. Earlier till last week I never had any Wifi signal problems upstairs in my Bathrooms etc. But since this week I am experiencing problem where when in Bathrooms upstairs Macbook and my Iphone would lose connection to Time capsule and if not lose connection then also internet would come to halt and speed being 20mbps becomes less than 1mbps. I used to get full connection speed there earlier but not anymore. Nothing has changed, I have not changed any settings or added anything new to network etc. Absolutely nothing has changed. My house is not even a big house. Its a 1860 sq foot Townehome. Now even in living room my iPhone loses Internet even though Macbook still has sitting next to it. But Iphone would show connected to wifi network but internet does not work and then i switch its wifi off and then switch it on and it works. Time capsule is 2012 model bought in Oct and 2tb. How to find out reason and rectify the issue?