If I format the micro sd card on my mobile phone is the data completely wiped out?

I intend to give my old mobile phone away. I have formatted the sd card. Is the data completely removed or is it like a hard drive?|||To my knowledge, anytime you format a memory card, all the data is gone. I know it happens when I format a memory card on a cell phone or PSP.|||Not completely. Just the fat table. Use a good deleter.|||If you have formatted the card, the data is gone.