Hi. My son has a Samsung Galaxy Y which has a SanDisk 2GB MicroSD fitted. He wanted more storage space so I bought a SanDisk 4GB MicroSDHC card (sorry to be so specific but I don't know whether it helps or not.) When I swapped SD cards and tried to put the apps etc onto the new card it seems to use the internal memory only which clearly means that memory soon runs out and some apps being too big. Has anybody any idea as to how I can make the phone use the external memory only and bypass the internal? It clearly recognises the new SD card because in settings it shows the extra memory. I have tried installing the App2SD application and followed a Youtube tutorial as someone suggested but to no avail. Thanks for any help.