Android Big Phone screen not filled up

When I put the code that ran for my Android Nexus S on the bigger Android Galaxy Note phones, the screen was not filled up completely, maybe just the top 70%. What I did to fix this was add in this line into the Manifest:

<uses-sdk android:minSdkVersion="4" />

4 or higher works. If you don't have this line, it's assumed to be 1 by default.