It looks like Apple has learned from previous encounters on problems with their iPhone, responding to this issue by offering a free swap. If the user is getting these problems, they can take their iPhone to an Apple Store and get it replaced right there and then.
The numbers have not been released and we doubt Apple wants to show how widespread the situation may be and how concerned users should be with their new iPhone 5S. We have not seen a lot of reports on the subject on Apple message boards, perhaps just a certain few have the manufacturing defect.
Apple’s iPhone 5S did not promise any upgrade in battery life over the iPhone 5 and some reviewers claim it is slightly worse, possibly due to the heavy 64bit A7 chipset on board the device. The average user will probably get about 10 hours before the iPhone decides to shut off.
It does seem like Apple is starting to become a more open and friendly company post-Jobs, customer complaints are being handled without problems for the most part and Tim Cook loves to talk about customer satisfaction and stores, pointing to a large connection with the user.
We remember when the iPhone 4 could not receive reception because of the metal case and Apple decided to retort by saying “you aren’t holding it right”, quite the mockery to the millions of people trying to make phone calls on the iPhone.
This issue appears to be only on a select number of iPhone 5S devices and is not affecting new iPhone 5C devices.