Memory card is one of the recent and most used external storage devices in smartphone, camera etc it has advantage over cassettes and compact disk since it can't cut,twist,crack, its portable, has higher storage space. But people do loose their vital files,music,videos etc without knowing why such occur. It really pains me to discover that i have lost all in my 32GB memory card and i know you will feel the same. To minimize this loss there are some tips in using memory card i have for you. The first is; do your best to buy two original memory cards(one for regular use, another for backup). secondly;don't frequently remove it from the port, don't scratch or pour water on the metal strip,don't use file in the mem. Card when battery is low ,don't remove mem.card until you off your device ,don't load your mem.card to be completely filled ,don't intentionally load corrupt file to your mem.card ,use card reader to work on the mem.card in computer system ,don't remove the card reader/mem.card instead eject from computer , after a long time of use back up files, format your mem.card and refresh back with your file...success!