White iPad 2 got intermittent Wifi issues

I have just bought an White iPad 2 16GB WiFi today. The iPad 2 lost connectivity when I left the room whereas my iPhone get good WiFi connectivity all through the house and outdoors. The WiFi only works for a short while, then completely stop.That is a difficulty of your wireless Network Mode. The iPad works fine with a pure N Mode, but does not work in mixed b/g/n mode.It seems this is a common