[Coda]

It's probably the tablet. No offense intended to you, but RCA's tablets are garbage. It's yet another example of a cheapo manufacturer buying the rights to a well-known brand name and using it to promote products that are just trash.

It could be that your phone isn't using USB Mass Storage for its interface. Cameras often support PTP or MTP instead, and Android devices are perfectly capable of presenting themselves as those kinds of cameras when connected to a computer. Unfortunately, I'm not having a very good time finding any apps that can communicate with USB PTP/MTP devices. On the other hand, this seems sort of unlikely anyway -- I assume that in the past when you connected the camera to your computer it showed up just like a USB flash drive?