if i backup the hp..then i reformat it..will all my msges gone???wat will usually be backup?

hey,i got a prob here...how to transfer phone msges to memory card???i created folders and put all the msges inside that folder..but it still under phone memory...how to transfer it to memory card?sigh....

but..now all the msges are stored inside my phone le..how to transfer it to memory card??

i just changed a new battery..not ori de la..they asked me to charge 8 hours when i 1st bought it..i charge until 8 hours but the battery indicator still moving(still charging)?! when i removed the charger,there are only 3 battery life...not long after that...the battery life became full! but the battery wont last long..half day only already battery empty! wat`s the prob???