sorry for the double post, but the title is better for this one, i just bought an unnamed 4 gig mini sd off ebay and came in the mail today, it worked great all day...and a little while ago i noticed it wasnt reading on my phone...i tried on my pc...and nothing....help me please! why is it not reading anywhere?!?

are you using the supplied sd adapter for your MiniSd? I swapped the one supplied from seller and used my SanDisk adpater and got it to work in my pc - Reformat'd and plugged it back into phone.

TucanoRC

you may have a cheap knock off...

I've been using a 4 gig generic card for over a year and haven't had any problem, I usually format once in awhile in my pc and reload things, but that's just me.

not all cheap knock offs are created equally... its possible the OP has a bad card since it just stopped working the same day he started using it...

Not only did i try the supplied SD card adapter, i have a Mini Sd to USB adapter also, tried it in 3 pcs...no dice...any help pls?

its defective. return it to the seller and request another one....