Originally Posted by trkicks
Waht sd you have? Try a SD Card with class 6 or more.
I have Kingston SDC4/16gb. Currently I don't have any card with C6 or above.
Originally Posted by Tcm9669
Are you sure it unmounts? (do you see a notification saying "It is now safe to remove your sd card") or does it come up as READ ONLY.. (if you open root explorer it will display as mounted R/O
Yes, I'm sure, when I open file explorer it can't see SD card, also if I check it in settings->storage it says insert an SD card for mounting. So I guess it could also be an faulty contact pin either on phone or card. Will check it now.