I've had this phone since the day it came out and I've killed 2 SD cards since. The first one was a Sandisk 64gb (which they're replacing for me) and then I purchased a Samsung 64gb which lasted, literally, 3 days. Both cards would only save 1/2 a picture. Like you can see the top of the picture and the bottom would be all grey. Also some pictures wouldn't save at all and I get that strange black screen with an exclamation mark. I know SD cards can go bad but really, what are the odds that I'd kill two in a weeks time. Anyone else having this issue?