Before you remove the SD card, you have to unmount it first. Always do the following before removing the SD card:
Settings > Storage > Unmount SD card
Wait for the message at the top of the screen that tells you it is now safe to remove the SD card.
Also, be sure to read the user manual that came with the phone. There is tons of invaluable information and HowTo's provided for you that will enhance your experience with the V.