Why is iPhone 4 Wi-Fi connection bad?

My iPhone 4 has such a bad Wi-Fi connection, I'm in my house upstairs and the router is downstairs. Why is is so bad?

Added (1). It's fine, the connection is perfect. It was the App I was using, it just didn't connect, all my other Apps that access online work fine. No need for something stupid like a router upstairs.-.

Closer is always better when it comes to radio waves.

The iPhone 4 has a bad connection in general. It's due to the placement of the receiver in the bottom of the phone. My girlfriend has a 4s and the difference in signal is substantial.

You need another router upstairs. Or u thought you could use it all around the world?

Why?

The weather probably, it's determined on your location. Try turning off your router then turn it back on a min or two later that should help as well

Probably your router, location, etc

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