[smnscu]

The hardware is great, especially given the price, but I've never seen so many weird bugs and glitches (it's my first Android phone, funny enough). I've repeatedly had photos not saved, or corrupted, or otherwise other stuff fail randomly (my favorite is "Unfortunately, Android System has stopped"). The karate chop motion for the flashlight is brilliant, but triggers very randomly. Overall you just get an annoying feeling that you can't rely on this phone. My next phone will most likely be running iOS again.

[mastazi]

Are you using an SD card? Try replacing it, that may be the culprit. I'm saying that because:

1- Those seem to be storage-related issues

2- I've had that phone for a long time and the only issues I had were due to a HW failure in my SD (which I then replaced).

Also, when you insert a new SD choose the "portable storage" mode because in my experience it tends to be more reliable.