A statement on Apple’s website was the first to acknowledge the problem, which came after numerous users complained on social media and online forums that the iOS 8.0.1 update left their phones largely inoperable.
The update was developed to add in fitness monitoring programs which were omitted from the iOS 8 platform released last week.
The Apple website acknowledged that the latest update, which was pulled shortly after its release on Wednesday, caused a loss of cellular service and the touch identification which allows users to operate their phones with a fingerprint ID.
“We have a workaround for you if you have an iPhone 6 or iPhone 6 Plus and you lost cellular service and Touch ID functionality today after updating to iOS 8.0.1,” Apple said.
The temporary fix allows users to reinstall iOS 8 through iTunes.
“We are also preparing iOS 8.0.2 with a fix for the issue, and will release it as soon as it’s ready in the next few days,” Apple added.
The news caused further embarrassment to Apple after some users posted comments about bends in the bodies of the iPhone 6 and iPhone 6 Plus when carried in trouser pockets.
On the MacRumors forum of Apple users, one iPhone buyer noted that, after carrying the handset in a front pocket for 18 hours, “I saw the reflection of the window in the iPhones slightly distorted.”
The user posted a picture of the bent iPhone, and dozens posted similar complaints on Twitter.
Apple said that on Monday it sold more than 10 million of the new smartphones in the first three days since launching in a handful of countries, setting a new record for opening weekend sales.
The new iPhones were launched Friday in the United States, Britain, Australia, Canada, France, Germany, Hong Kong, Japan, Puerto Rico and Singapore.
They will be available in more than 20 additional countries on 26 September, and 115 countries by the end of the year.
Samsung meanwhile announced on Wednesday that it was launching its oversized Galaxy Note smartphone earlier than expected, getting into the key Chinese market ahead of Apple.