I've only had issues with the WiFi, but I've always had issues with wifi on phones, even on my BlackBerry Curve (which was HORRIBLE!).
For some reason, it's fine line-of-sight, but stinks on the first floor and on the left side of my bed (where my laptop is). My room has the router. Wifi is consistently fair to poor downstairs in the living room. My mom says her wifi on her iPhone is fine, but Apple products heavily sugar coats signals.