How do I use iCloud to sync Pages documents from iPad to iPhone?
Make sure iCloud is turned on.
Open Settings > iCloud, and turn On "Documents and Data" if it is off.
If you are on iOS 6 on your iPhone, and not connected to wifi, open Settings > General > Cellular, and make certain "iCloud Documents" is On.
Verify that you are signed into the same iCloud account on both devices.
Install the Pages app on your iPhone, and on your iPad.
Open Pages on your iPhone. If you have created documents on your iPad, it may take a few moments for your iPhone to download them.


In addition, you may find this how-to resource helpful in setting up iCloud.