(1) All batteries degrade. This should be accounted for in the initial design, so that there is sufficient battery life at the end of product life, not just at the beginning.
(2) Replacing the battery should be simple. Pop open the back cover, pull out the battery, and push the new one in. Heck, I used to carry a spare battery just in case, because it took 15 seconds to swap. Taking it to a phone shop and waiting an hour isn't what I would call simple.
(2) Replacing the battery should be simple. Pop open the back cover, pull out the battery, and push the new one in. Heck, I used to carry a spare battery just in case, because it took 15 seconds to swap. Taking it to a phone shop and waiting an hour isn't what I would call simple.