I installed a SanDisk 16GB Micro SD card - it is showing up in my settings - storage - under the External SD card - but did not ask me to format it - am i suppose to format and if so how???? I have very little extra apps installed and am almost to my max on internal storage - there is an update and says there is not enough room to update. Can i install games from the market on the SD card - and if so how do i do that??? i really don't understand this!