How's battery life doing on iOS 10.3? (Especially iPhone 6)?

How's battery life doing on iOS 10.3? (Especially iPhone 6)?

No different than normal.

  • Why do Iphone chargers (especially iphone 5) not last very long? I can never keep a charger more than a couple months without it breaking or ceasing functionality. It doesn't matter if I'm using the charger mostly in the office, in my car, at home, etc. Is this a scheme by manufacturers to keep charger revenue flowing or is this the universe's way of telling me I use my phone too much?
  • Possible to change iPhone battery for better battery life? I'm going to get iPhone 4s and heard it's battery life runs out quickly. Could you buy a better one which lasts longer to replace? Which are best and what is the price range?
  • My iphone 5s had low battery life so i ordered a new battery and replaced it? But still the battery life is same as before even if its new one… Could the phone be probelmatic? Also my sis gave me an iphone 5 and its battery life is way bigger… Could i take the battery of 5 to take it on 5s?
  • My eyes hurt, especially whe looking at a screen, why? So recently my eyes started hurting, especially in the back when I look at my iphone screen or a screen in general, I haven't been having lots of screen time but I would watch about an hour to two hours of netflix on my phone when I go to bed, and my eyes are a bit more sensitive to light, are they just irritated or is there some bigger problem?