iphone 6s home button doesn't wake up the device always
First of all please don't suggest me to go with a Genius i'm NOT in the States.
Happens randomly, it started happening since ios 10 but more frequently recently with ios11.
I use to unlock my device pressing the home button once and that's all but sometimes nothing happens, I'have noticed a delay sometimes it wakes up after 2 seconds.
I know i'm not alone with this issue. is it a hardware or a sofware one?,
I think it is a software one my ipad air 2 used to do the same but since ios 11 it doesn't happen anymore.
Any suggestions to fix this?
Thanks!
iPhone 6s, iOS 11.2.6