I bought a 32gb micro sd card ages ago for my sgs2, and had about 18gb of stuff on it, mainly music, but every time I opened the screen I got a message across the top of the screen telling me that the phone was preparing sd card or something similar. Anyway, the upshot of it was that my battery was being sucked dry at an astonishing rate, so out came the card! Moving to present times, I now have an sgs3, so yesterday decided to put card in, and lo and behold, the battery immediately started to get a hammering! How can I tell my phone to ignore the card until I actually want to access something that is on it? I read some advice somewhere that suggests copying all the data off the card to my pc, and then to format the card, and then copy the data back. Which is what I'm in the process of doing as I type. (only going to take 2hrs 10 mins to copy the data to my pc!!!) Can anyone confirm that this will do the trick(or not) or suggest another plan of attack? Does it matter what file system I format the card to, fat32 or something else? I can't accept that this is par for the course if anyone wants to use the micro sd facility that is provided by Samsung. All help/suggestions gratefully received. If it helps, the card is a 32gb Sandisk class 4.