When you already download the .apk file and installed on your device and then you play, the program will recommend to download supporting data through a wifi connection. That because the total supporting data must be downloaded is 106 MB.
But now you can download the supporting data through a PC or Desktop, without being connected to your device. You just need download the data, and then Copy data to
Free Download Full Data PES 2012 (Pro Evolution Soccer) for Android Offline (106,22 MB)
If you don't have the application or .apk file of PES 2012, you can download it here