look at these screenshots:
my iPhone 6 bought in late October:
my iPhone 5 from late October 2013!:
the iPhone 5 still has 91,2% after 625 cycles while my iPhone 6 is already down to 90,8 % after only 187 cycles. Friends iPhone 6 is still at 98% and he bought it a month after me
the iPhone 6 also turned itself off around 16 % twice in the past telling me to charge it (i heard about this happening on iPhone 5 a lot back in the day).
i do have Apple Care+ for it, do you think i should have it looked at?
my iPhone 6 bought in late October:

my iPhone 5 from late October 2013!:

the iPhone 5 still has 91,2% after 625 cycles while my iPhone 6 is already down to 90,8 % after only 187 cycles. Friends iPhone 6 is still at 98% and he bought it a month after me
the iPhone 6 also turned itself off around 16 % twice in the past telling me to charge it (i heard about this happening on iPhone 5 a lot back in the day).
i do have Apple Care+ for it, do you think i should have it looked at?