Even though the battery capacity on Apple's devices is not impressive when compared on paper with its Android competitors, the optimisation of hardware with iOS ensures that the battery life is never a concern for the users. However, the iOS 10.1.1 update has reportedly broken this perfect blend between hardware and the software for some users, resulting in certain devices shutting down rather abruptly.
User complaints on Apple's support forum, mostly regarding iPhone models, suggest that the issues regarding the battery life are being faced by users post the iOS 10.1.1 update come in different forms. Certain users have complained that the battery life dies out after reaching 30 percent level while others are claiming that the entire battery life drains out in around two hours without any active usage.
Further, some users have complained that the phones are showing a higher battery level while on charging but drops down to a significantly lower level once removed from charging. The Next Web notes that turning off the 'Raise to Wake' feature has fixed the issue for some of the users but is not applicable to many other users.
Interestingly, the battery issue seems to be prevalent on not just the ageing devices but also the latest smartphones by the company. One of the users who contacted Apple Support regarding the battery issue was reportedly told that the company's engineering team is working on an update to resolve the issue.
Apple previously launched a repair programme to fix batteries for those iPhone 6s users who were experiencing unexpected shutdowns. It will be interesting to see how long Apple takes to resolve this firmware issue given that this time around it is prevalent on most iPhone models.