You can use Mobile Atlas Creator to create tiles for your geotiff and create a zip file of the tiles - in combination with OSMDroid
"The easisest way is to download MOBAC, then run it and mark out an area you want, store the tiles in Osmdroid.zip format. When that's done, drop the zip file into the osmdroid folder on your device."
http://stackoverflow.com/questions/9747765/how-can-download-map-in-osmdroid/9749861#9749861
OSMDroid
http://code.google.com/p/osmdroid/
Mobile Atlas Creator
http://mobac.sourceforge.net/
Your result is a zoom-able pan-able version of your GEOTIFF