Iphone6 ,ios 8.2,8.3 randomly reboot with blue screen

i have an 64G iphone 6 with ios8.3 .my problem is blue screen!I had it before this update too but now is intorable! sometime my wifi drop and it randomly reboot And sometimes it shows blue screen and randomly reboot ;i think it is beacuse a software bug.

It happen 4 or 5 times a day! I think im not alone ,also my friend have this problem on iPad Air2.