Phone turns off at 4% battery
it's been a week now since i had this problem,
roughly about a week ago i experienced the phone shutting down at 4 percent battery remaining.
My z1 turns off after about a minute after system alert saying the phone has 5 percent battery left,
and red LED flashed trice when i tried to turn it back on; which means it's out of juice.
since then i've never seen 0%~3% on my phone lol it always shuts off at 4%.
anyone have similar experience or problem?
my z1 isn't rooted and runs everything stock!