My power button stopped working on my first phone after 3 days. That was on a Sunday. On Monday I was taking it in to have it replaced. I'll be danged,I dropped the phone in the parking lot and got a ding in it. So they wouldn't swap it. I paid the deductible and got a new phone.
I did see another post where a guys volume button or buttons stopped working. So it has me wondering if this is a problem.
Post only if they stopped working on their own, not if you dropped it or broke it - but if if they just stopped working on their own.