Do IOS 8.4 can fix the problem of iphone 5 rear camera that is freezing?

My iphone 5 ios 8.3 rear camera is freezing the torch is not also working we check the hardware it's not an hardware issue. I'm just need some news about it ,cause I see that there is a lot of customers that is having same kind of issue, did the ios 8.4 fix the bug? and is there any way that we can remove the apple watch app on the phone it's just eating too much memory on the iphone..thank you !!!