phone unexpectedely reset

[evoflipped]

LG optimus (sprint) somehow daughters phone reset. Apps gone from home screens (still on phone though) all contacts gone. Had to remount sd card and sign back into google account to retrieve contacts.

Daughter states that messages about sd card started poping up month ago.... sd card removed
preparing sd card
sd card ready to remove

Any ideas

 

[Ez Duzit]

It's a known problem with the stock sd card in this phone. Buy a new sd card, class 4 or better.