|
In theory they should all be very similar but the eInk display seems to have quite a bit of manufacturing variation. There is a chip on the eInk display which stores calibration data that is specific for that display so just going by the fact that they need that and it isn't generic means its not a very precise process.
That said, the operation of the eInk display is very dependant on the firmware as well. One of the early K3 firmware releases caused the display to be very susceptible to temperature changes and high temperatures would cause excessive slowdown during refresh. They fixed or at least significantly reduced this issue in a later update.
As for the other issues like rattling and excessive battery consumption, those seem more like faults tho. If it isn't how you expect it to be then you should definitely talk to Kindle CS and see what they can do.
|