samsung galaxy s duos2 7582 :- when i insert sd card messageing does't work

[Hasan Zakir]

when i insert sd card messaging does't work and mobile become slow and every goes wrong
..i have purchased a new card but problem is still same

 

[hang-the-9]

That is a bit odd, you did nothing except install the card? Did not try to move programs to it or anything else?