If anybody thinks Samsung and iPhone is the biggest culprit, then you have never used a modern Nokia device, my dude.
There is a systemwide lax when it comes to batteries of Nokia phones, in general. I own a Nokia, and I kid you not, it doesnt charge on 0% at all! It doesnt charge one bit. I have to start it up with any remaining battery it may have, just to TURN.IT.ON!
FYI - I posted a thread asking why my android battery drained so quickly and had to be replaced. I found the answer is that I had been fully charging the battery to 100% every night, which causes heat expansion and damage to the battery. I was advised by a repair tech to allow it to run down to 20% before charging, and to stop at around 80%-90%. No more problem.
I solved this problem. I had been charging my phone battery every night to 100% thinking this was a good thing to do, but a tech repair man advised that unnecessarily overcharging batteries causes heat expansion, which damages the unit. I replaced the battery and only charge it when it gets down to around 20%, up to around 90%. No more problem.