I just purchased a Samsung Intensity II the other day. I purchased a memory card at the same time (16g, I think).
The card was put in the phone in the store by the sales clerk.
Once home, I 'formatted' the card. I hooked the phone up to my computer, and it the computer recognized the card, and thought it was dropping ringtones and pics onto it.
When I disconnect from the pc, and try to view and manage the files between the memory card and the phone, the phone insists no card is installed.
I've removed and reinstalled numerous times. The phone still won't recognize the card.
Here's what else is weird: when I INSTALL the card, it tells me the card has been removed. If I actually remove the card nothing happens.
I put the micro SD card into the adapter and plugged it directly into the computer sd-card slot. It reads it and I can add/remove files from it.