I downloaded an app Phone INFO which shows a number of stats, particularly "Battery Discharge Cycles". I want to know if this number is being retrieved from the battery (i.e. it's just the number of cycles for the current battery) or the phone (i.e. it's the sum of the cycles across all batteries the phone has contained). In other words, if I insert a brand new battery, should I expect the count to drop to zero?
Context: I have a Samsung S6, which doesn't allow easily changing the battery. I went to a phone repair shop to have the battery replaced. I left it there for the day and did not observe the process of replacement. Now I suspect that I was scammed and the battery has not been changed. I want to confront the shop and use the cycle count (which is still very high) as evidence, so I'm checking my understanding first.