I've had my S5 for a week now and I've had some problems with it. I can't keep the SD card mounted. After a reboot, it recognises it, I can browse the content but shortly after I get the "sd card unexpectedly removed" error and the card is unmounted. I've tried 2 different cards, a SanDisk 64GB and a Kingston 32GB, tried formatting them with every option possible(FAT32, NTFS, exFAT), but to no avail. After a while, I noticed that the error occurs immediately after I get a random "Check battery cover" message. This is not the one I get after the reboot, this is another random one, and I understand that except the one at the beginning, you shouldn't get any more of those notifications. The seal on the cover seems fine. Has anyone else had this problem ?