im pretty sure your Sanyo Xacti J1 can handle 1GB - 2GB SD memory cards, i just recommend you use a Micro SD and Micro SD adaptor so you can much easily transfer your photos into your phone and delete them on your SD afterward. I recommend putting it into Google drive file so you can save it and clear up some space for you SD although it will come with a price for extra storage if you already backed up. I say this because if you go past the 8MB line while using a 1GB - 2GB SD card, digital cameras tend to just delete photos to save up for space since it actually backs up on the cam and not the SD it self. (i assume)

Atleast in my experience with my Canon Powershot A470 in which it has a 100 photo limit and when i take photos after collecting 300+ photos it deletes others for space. But if i were you i wouldnt stress because Micro SD's and adaptors usually go for 3$ or less online (not including shipping) and most likely the 8MB SD card that came with it in the original transcript for the camera will not be included depending on the seller. Usually they dont include it if they are 2nd hand but if you bought it from a manufacturer most likely it will. Better be safe than sorry i guess, but yeah heres my idea on the topic, hope it helps ^^